Question 61.2.A.0.418, XQ-BC52 signal problems - Sony Xperia 1 III

Hi, I am new to Sony family and bought used III which mightve been a Mistake.
I never see the signal having all bars full. It also reports values around 100dbm.
I have not been making calls really but I can see the reception is worse than with my old Xiaomi 9, same for 4g. Sometimes it drops and only restart fixes it.
Running dualsim, different carriers. Did network config restarts etc.
Lets assume it is sw problem. Could it be bad non-eu stock rom? How do I check?
I might immediatelly go with custom rom, maybe on android 12 just to see if it works better. Any suggestions? I just dont think factory reset or flashing stock is gonna fix it easily and I am open to experiments as long as the system and mainly signal reception is stable because next stop is trashbin really. The phone is overall great, I just did not expect phones having such problems nowadays.

I've seen the same, especially if I go underground for a few minutes - the phone can't reconnect unless I restart it or switch on and off the airplane mode.
But apart from that I have a pretty stable connection, no matter what the bars show.
My uneducated guess is power savings affect the signal strenght.
Never had problems during calls, no matter if driving or stationary

MorkoCZ said:
Hi, I am new to Sony family and bought used III which mightve been a Mistake.
I never see the signal having all bars full. It also reports values around 100dbm.
I have not been making calls really but I can see the reception is worse than with my old Xiaomi 9, same for 4g. Sometimes it drops and only restart fixes it.
Running dualsim, different carriers. Did network config restarts etc.
Lets assume it is sw problem. Could it be bad non-eu stock rom? How do I check?
I might immediatelly go with custom rom, maybe on android 12 just to see if it works better. Any suggestions? I just dont think factory reset or flashing stock is gonna fix it easily and I am open to experiments as long as the system and mainly signal reception is stable because next stop is trashbin really. The phone is overall great, I just did not expect phones having such problems nowadays.
Click to expand...
Click to collapse
As A current Metro by T-mobile sales rep, and self proclaimed cell phone guru, some carriers require a phone to be registered on your account for it to fully work, even if the phone on paper has all the supported bands of said carrier. so this could be the problem, and if it's a software problem you can simply reinstall the correct firmware for your region and device and see if that fixes the issue, you could also try a different region but same device model number...

MorkoCZ said:
Hi, I am new to Sony family and bought used III which mightve been a Mistake.
I never see the signal having all bars full. It also reports values around 100dbm.
I have not been making calls really but I can see the reception is worse than with my old Xiaomi 9, same for 4g. Sometimes it drops and only restart fixes it.
Running dualsim, different carriers. Did network config restarts etc.
Lets assume it is sw problem. Could it be bad non-eu stock rom? How do I check?
I might immediatelly go with custom rom, maybe on android 12 just to see if it works better. Any suggestions? I just dont think factory reset or flashing stock is gonna fix it easily and I am open to experiments as long as the system and mainly signal reception is stable because next stop is trashbin really. The phone is overall great, I just did not expect phones having such problems nowadays.
Click to expand...
Click to collapse
I have the same problem as well

unicastbg said:
I've seen the same, especially if I go underground for a few minutes - the phone can't reconnect unless I restart it or switch on and off the airplane mode.
But apart from that I have a pretty stable connection, no matter what the bars show.
My uneducated guess is power savings affect the signal strenght.
Never had problems during calls, no matter if driving or stationary
Click to expand...
Click to collapse
I have not really tested it much in such environment like underground. The signal mostly stays ok, not full at all but the connection works tho. I had only like 2-3 restarts/week due to connection reporting only EDGE available (still I couldnt browse anything) and both sim signals showed a problem (exlamation mark), I think it could have been caused by worse reception conditions and it eventually stopped working at all.
Ainz_Ooal_Gown said:
As A current Metro by T-mobile sales rep, and self proclaimed cell phone guru, some carriers require a phone to be registered on your account for it to fully work, even if the phone on paper has all the supported bands of said carrier. so this could be the problem, and if it's a software problem you can simply reinstall the correct firmware for your region and device and see if that fixes the issue, you could also try a different region but same device model number...
Click to expand...
Click to collapse
I dont see registration being a requirement here in EU. These are prepaid simcards, no binding to a device, no contract and such.
I dont know if its software problem. After little bit of Googling I came to a conclusion that Sony does indeed have problem with signal reception no matter what is the cause. To me it seems it could be SW related. Question is if flashing stock rom is the way to go or maybe using a custom rom as daily driver?
DrDrag0n said:
I have the same problem as well
Click to expand...
Click to collapse
What os/rom do you have? Have you had any success on making the reception better, more stable? Did custom rom help with that anyhow?

MorkoCZ said:
I don't see registration being a requirement here in EU. These are prepaid simcards, no binding to a device, no contract and such.
I don't know if its software problem. After little bit of Googling I came to a conclusion that Sony does indeed have problem with signal reception no matter what is the cause. To me it seems it could be SW related. Question is if flashing stock rom is the way to go or maybe using a custom rom as daily driver?
Click to expand...
Click to collapse
In the states Metro by T-Mobile is a prepaid company that uses T-Mobile's network, but they specifically require your current device to be on your account to make sure they can give you the correct info on why your phone isn't working correctly. And some times to send the correct configuration file to your device. But in your specific case i would say go the firmware route and see if that fixes it before calling the carrier to see if there's a config file or something similar they need to send.

Ainz_Ooal_Gown said:
In the states Metro by T-Mobile is a prepaid company that uses T-Mobile's network, but they specifically require your current device to be on your account to make sure they can give you the correct info on why your phone isn't working correctly. And some times to send the correct configuration file to your device. But in your specific case i would say go the firmware route and see if that fixes it before calling the carrier to see if there's a config file or something similar they need to send.
Click to expand...
Click to collapse
Thanks for the explanation. I chose the FW route, testing AlphaDroid as of now. So far so good. Reception already looks better so I will stick to this rom for now and see how it performs.

MorkoCZ said:
Thanks for the explanation. I chose the FW route, testing AlphaDroid as of now. So far so good. Reception already looks better so I will stick to this rom for now and see how it performs.
Click to expand...
Click to collapse
Just a tip, you might wanna force 4G even on custom ROMs, I am running same config as you double sim and diff carriers but i get better result by forcing LTE Only on my main data SIM.

Sakuu said:
Just a tip, you might wanna force 4G even on custom ROMs, I am running same config as you double sim and diff carriers but i get better result by forcing LTE Only on my main data SIM.
Click to expand...
Click to collapse
Got it, thanks for the tip.

MorkoCZ said:
Got it, thanks for the tip.
Click to expand...
Click to collapse
I have a quick update for you regarding my devices connectivity problems
I reflashed the latest global firmware, this overrides the modem 5g configs that you find on all of the 5g enabling guides.
immediately my reception AND my phone switching between 3G, 4g 4g+ etc was better. Im not saying im magically getting full bars, but its improved substantially on top of switching between networks when travelling etc is instantly now. Instead of me having to enable flight mode to reset my network every time.
i will try flash a custom rom and see if the reception stays fine
only had problems after trying to enable 5g and follow the guides.
edit: spelling

DrDrag0n said:
I have a quick update for you regarding my devices connectivity problems
I reflashed the latest global firmware, this overrides the modem 5g configs that you find on all of the 5g enabling guides.
immediately my reception AND my phone switching between 3G, 4g 4g+ etc was better. Im not saying im magically getting full bars, but its improved substantially on top of switching between networks when travelling etc is instantly now. Instead of me having to enable flight mode to reset my network every time.
i will try flash a custom rom and see if the reception stays fine
only had problems after trying to enable 5g and follow the guides.
edit: spelling
Click to expand...
Click to collapse
Cool, thanks for the info. What is the version of that global fw?
I had only one network disconnect on AlphaDroid but it managed to fix itself within minutes. Still the display seems bit irresponsive to touches at times, baterry drain is not the best and also call quality does not seem to be the best. So I am considering switching to global or maybe different custom. Ofc it could be just my device.

MorkoCZ said:
Cool, thanks for the info. What is the version of that global fw?
I had only one network disconnect on AlphaDroid but it managed to fix itself within minutes. Still the display seems bit irresponsive to touches at times, baterry drain is not the best and also call quality does not seem to be the best. So I am considering switching to global or maybe different custom. Ofc it could be just my device.
Click to expand...
Click to collapse
You should start using 120Hz if it feels slow (go into QS settings and get the refresh rate toggle from there), also enable High polling rate from Settings > Display for better responsiveness, also if you're rooted/using Shizuku you should try https://github.com/kyujin-cho/pixel-volte-patch/releases it may unlock some SIM options that may improve your call quality.

MorkoCZ said:
Cool, thanks for the info. What is the version of that global fw?
I had only one network disconnect on AlphaDroid but it managed to fix itself within minutes. Still the display seems bit irresponsive to touches at times, baterry drain is not the best and also call quality does not seem to be the best. So I am considering switching to global or maybe different custom. Ofc it could be just my device.
Click to expand...
Click to collapse
6.1.2.A.0.447 was what I upgraded too
Honestly, I don’t have a single practical use case for my phone where i need 5g enabled, so it’s really not a deal breaker for me to not have that enabled. 4g+ is still pretty quick especially for my use case. If you want volte & vowifi I recommend magisk + zygisk so you can use banking apps. Works well for me and call quality is fantastic
edit: I think I should note i did a full clean flash, flashing all and wiping all data on the phone. It’s been a few days and signal noticeably better.
edit 2: spelling (damn autocorrect)

Related

[Q] Problem with cell network

I am admittedly a noob when it comes to Android phones. I have had my i777 for a few months now and have successfully bricked it more than once. Having said that, I have found that the answers to my questions have always been on the board somewhere. I am having troubles figuring out where to go with this portion of the issue though. Having tried several different ROMs for my phone, I keep having the same issue. With any ROM, other than stock, I miss phone calls or text messages when my phone is locked and on Wi-Fi at home. If I'm out and about with my phone in my pocket and locked, it works normally. But, if I'm at home working at my desk and the phone is locked, I will not get text messages or phone calls. Notifications from apps like CNN continue, but nothing from the mobile network. I have followed the guide to return to stock and built my own jig that worked to reset my flash counter as I flashed before I read when I got the phone. (Former iPhone user that just assumed it was as easy as a jailbreak, really really dumb on my part)
I am a tech geek. I follow instructions well. I am sure the problem is with my phone and not the ROMs. My question for the forum, is where to begin troubleshooting the issue. I want to be able to use these ROMs.
Some info that may be helpful:
Baseband: I777UCKH7
Kernel: 2.6.35.7
I have tried the following in no particular order:
UCKK6-SHOstockV1.9.2noWipe
Serendipity_8.2
update-unnamed-v2.2.1-full
ICScrewD_2.1
TurkbeyRom-v33
Each has individual issues that I can deal with and learn to fix, but the phone issue I, obviously, cannot get past.
Have you set the phone to keep the wifi active when sleeping or locked?
Miami_Son said:
Have you set the phone to keep the wifi active when sleeping or locked?
Click to expand...
Click to collapse
No I have not. Does the wifi connection prevent the cell network from connecting?
cell network shouldn't disconnect at all if it is, swap it out could be bad phone. Also what is your signal level at your desk at home? Low signal normally causes missing of messages.
Puff3r said:
No I have not. Does the wifi connection prevent the cell network from connecting?
Click to expand...
Click to collapse
No, it doesn't.
Do you use any 3rd party apps like tasker?
When did this issue start? Perhaps there is an issue with the tower that serves your home. How strong is your cellular signal at home? I believe text messages (except MMS) are sent over the cellular network. Your being on wifi shouldn't matter (does being at home with wifi off and the phone locked still cause issues?).
I can't imagine other ROMs causing issues, though. If anything, they would mess up your data network only if they had the wrong APN settings for your area (for example, for a while, people using Unnamed didn't have data issues, except for a few like me who lived in certain areas with Cingular towers). Or maybe the stock modem files are better for you than the ones provided by the ROMs?
Maybe you have an old sim card that somehow has issues? You should be able to get a free one from at&t. Do you have another phone that you can test it with?
nh5 said:
cell network shouldn't disconnect at all if it is, swap it out could be bad phone. Also what is your signal level at your desk at home? Low signal normally causes missing of messages.
Click to expand...
Click to collapse
I keep a minimum of 3 bars and live near the center of a large city. As stated in the op, this is only happening on added ROMs never on stock. I have again reverted to stock (+root), since the op, and confirm that I am getting messages and calls at my desk at home with the phone locked.
****************************Edit for SoCaliTrojan post********************************************
I do not have any additional task managers installed, I've just always used the one built in. As for the SIM card, I am using the one that I got with the i777 at upgrade and get the 4G network when not on wifi, so I think I can rule it out. My wife has a Note that I have been drooling over, guess I will have to "borrow" it for "testing" when she gets home from work.
Also, I notice I am on baseband KH7 with Android version 2.3.4. I see mention of KK6 and 2.3.6 on the forums. I have avoided flashing the baseband, when possible, to keep from possibly bricking the unit. Is it possible that upgrading these could resolve the issue?
That is a very weird problem. Only thing I can suggest is compare the APN settings in root with a custom rom's settings. They should be identical, but check anyway.
Sent from my SGH-I777 using xda premium
Puff3r said:
As for the SIM card, I am using the one that I got with the i777 at upgrade and get the 4G network when not on wifi, so I think I can rule it out.
Click to expand...
Click to collapse
OK, I have to ask since seeing the above, do you have a plain SGSII or a SkyRocket?
Miami_Son said:
OK, I have to ask since seeing the above, do you have a plain SGSII or a SkyRocket?
Click to expand...
Click to collapse
It is branded GalaxySII on the back with model number sgh-i777.
Puff3r said:
It is branded GalaxySII on the back with model number sgh-i777.
Click to expand...
Click to collapse
Then it isn't connecting to 4G networks.
It's labeled as "4g" but really just multiple 3g connections to give you a faster overall speed. But you might want to just try getting a new sim card at your AT&T store, if that doesn't work, try a different modem (like KK6) the whole list/downloads are in the development section.
penguinlogik said:
It's labeled as "4g" but really just multiple 3g connections to give you a faster overall speed. But you might want to just try getting a new sim card at your AT&T store, if that doesn't work, try a different modem (like KK6) the whole list/downloads are in the development section.
Click to expand...
Click to collapse
I made AT&T upgrade me to a n LTE sim card. Our phone disent have LTE but the newer sim cards supposedly will make your speeds faster when LTE does come to your area due to it pushing HSPA+ faster than enhanced backhaul.
You said you live in the center of a big city maybe being surrounded by a lot of tall buildings could be causing havoc on your cell reception.I know at my work I can send and receive messages and calls everywhere except our breakroom but everyone else's phone works fine in the breakroom.
Sent from my GT-I9100 using xda premium
If I was wanting to pit a new modem on my sgs2 att phone what do I need to do?
Sent from my SAMSUNG-SGH-I777 using XDA

Keep losing data connection.

I have an unlocked unrooted S3 on Vodafone UK. This issue has been happening for the last few days whereby i have full 3G/H+ connection, but absolutely no data is working. No email, no websites loading, no whatsapp, nothing. The issue goes away as soon as I restart my phone, but then it comes back after a few hours.
Has anyone experienced this, and if so, how have you fixed it?
Go back to your network/phone provider .
Or flash different modem .
jje
I am having this issue too. I may be wrong, but i realise this happens if i turn off my Wifi, the 3G will not want to connect to the 3G network.. Anyone else having such problem?
By the way mine is International version (Location: Singapore)
I'm having a similar problem where I have a good 3G/H/H+ connection but data seems to drop intermittently across all applications - I get the same sort of error message in browsers/facebook/twitter that you receive when you have no signal.
Anyone have anything similar and know of any fix?
I am not having such issue so far. I been updating my SGS3 using over-the-air update. I guess the MODEM has been updated as well.
Go to market and download "fast dormancy"(by gorkhanmoral) then disable it and reboot.
Check if your speed has improved,if it got worse then enable it again.
U need ROOT to use this tool.
I it didn't help, then flash a different modem
This is good modem
Cwm flashable
flame1845 said:
I have an unlocked unrooted S3 on Vodafone UK. This issue has been happening for the last few days whereby i have full 3G/H+ connection, but absolutely no data is working. No email, no websites loading, no whatsapp, nothing. The issue goes away as soon as I restart my phone, but then it comes back after a few hours.
Has anyone experienced this, and if so, how have you fixed it?
Click to expand...
Click to collapse
have you got any battery saving app like juice defender installed in your phone?
Is mobile data working at all? or is it constantly "uploading" but never "downloading" (up arrow lights but not down).
If what I just described is your issue then this is a network issue relating to android in general.
Basically your phone will be connected to two radio towers and gets confused as to which one it should use, rebooting or flight mode may help force it onto one tower or you may have to speak to your carriers "high network technical team" or whatever they are called for you to get them to force it onto one tower.
I had this issue on the HTC hero (a long time ago now) and it took 9 months for Orange UK to work out what was going on.
and it took 9 months for Orange UK to work out what was going on.
Click to expand...
Click to collapse
Congrats. Orange Luxembourg (my gf's network provider) still hasn't got a clue.. But they seem rather clueless about everything except writing invoices.
Flashing an Asian modem on her S2 made the issue far less prominent since they seem not to get confused by antenna ping-pong. (Tango Luxembourg, my carrier, has this issue too in the main city)

[Q] Data speed problem

Hello All,
I am hoping that someone can help me out.
I purchased 6 Samsung Galaxy S3 unlocked phones. I put SIM chips in each, all from the same provider and all with the same service plan. 3 of the phones everything is working great including fast Internet. The other 3 phones have extremely slow Internet. I did a bit of research and noticed that the phones that are slow display EDGE in Mobile network type. The phones that are fast display HSDPA:9 . Could this difference be the cause of the data speed problem? Can anything be done to fix it?
My apologizes if this is being posted in the wrong forum.
Thanks
liz.la said:
Hello All,
I am hoping that someone can help me out.
I purchased 6 Samsung Galaxy S3 unlocked phones. I put SIM chips in each, all from the same provider and all with the same service plan. 3 of the phones everything is working great including fast Internet. The other 3 phones have extremely slow Internet. I did a bit of research and noticed that the phones that are slow display EDGE in Mobile network type. The phones that are fast display HSDPA:9 . Could this difference be the cause of the data speed problem? Can anything be done to fix it?
My apologizes if this is being posted in the wrong forum.
Thanks
Click to expand...
Click to collapse
In your way, EDGE means slow, HSDPA fast, HSDPA offers speeds up to 21mbps (if your carrier supports it) and EDGE up to 0.5 mbps or so.
Now, if your 3 other phones don't connect to HSDPA (3G) then it's disabled in settings or signal is low or the chip is messed up.
So by checking if everything is good go to settings, under first tab (connections) go to More networks > Mobile networks and make sure that under network mode WCDMA/GSM is checked, notice that WCDMA is HSDPA.
If still not getting faster speeds try to check if WCDMA only option works, if not, eh, bad chip.
lsalamun said:
In your way, EDGE means slow, HSDPA fast, HSDPA offers speeds up to 21mbps (if your carrier supports it) and EDGE up to 0.5 mbps or so.
Now, if your 3 other phones don't connect to HSDPA (3G) then it's disabled in settings or signal is low or the chip is messed up.
So by checking if everything is good go to settings, under first tab (connections) go to More networks > Mobile networks and make sure that under network mode WCDMA/GSM is checked, notice that WCDMA is HSDPA.
If still not getting faster speeds try to check if WCDMA only option works, if not, eh, bad chip.
Click to expand...
Click to collapse
Thanks for the reply.
I activated the WCDMA/GSM. As soon as I did the icon status(?)displayed on the top of the phone turned to a circle with a line through it. About 3 minutes later the status changed to an E with bars next to it. The Status/Mobile network type still says EDGE.
When I try to connect to a site it is slow. Does this mean the device is still getting the 2G signal? Could all 3 phones have a bad chip?
Thanks.
that is true
liz.la said:
Thanks for the reply.
I activated the WCDMA/GSM. As soon as I did the icon status(?)displayed on the top of the phone turned to a circle with a line through it. About 3 minutes later the status changed to an E with bars next to it. The Status/Mobile network type still says EDGE.
When I try to connect to a site it is slow. Does this mean the device is still getting the 2G signal? Could all 3 phones have a bad chip?
Thanks.
Click to expand...
Click to collapse
Do all of the phones have the same baseband? Check in settings, about.
Just to make sure the modem is the same.
I just check 2 of the phones (they are all not with me now)
The baseband of one of the good (fast) ones is: I747UCDMG2
and on one of the slow data phones is: I747MVLUEMK5
What does this mean, that they are not the same?
liz.la said:
I just check 2 of the phones (they are all not with me now)
The baseband of one of the good (fast) ones is: I747UCDMG2
and on one of the slow data phones is: I747MVLUEMK5
What does this mean, that they are not the same?
Click to expand...
Click to collapse
Both are i747 version which is not international version, maybe Korean or something like that, try using only WCDMA this is constant 3G, and see if it works, if not, flash the latest software from sam mobile via Odin, but watch out you download for i747, not i9300 etc. There are many S3 variants.
I tried using only WCDMA with no success.
Do you have instructions of how to locate and flash the latest software? Also I know the phone is currently unlocked would this change that?
Thanks so much.
liz.la said:
I tried using only WCDMA with no success.
Do you have instructions of how to locate and flash the latest software? Also I know the phone is currently unlocked would this change that?
Thanks so much.
Click to expand...
Click to collapse
If it is unlocked, it shouldn't change that.
And note if changing software doesn't help then the chip might be damaged.
For software, go to www.sammobile.com and register, then go to browse firmware and select android/galaxy s3 bla bla.. until you get to country, there select your country, or go to top and select 'top 10 latest' and choose one that is different from yours.
You can know of it is different by the baseband name letters for etc 'XXUGNG3'.
Then download the software you want (it may take a while) and download Odin v3.09 (just type that in google you'll fond ot) and Samsung USB Drivers (also found on google easily).
Install usb drivers, reboot, open Odin, extract downloaded firmware, go to odin and select AP and then navigate to extracted zip and select you software.
Then put your phone in download mode: hold vol down+power+home and then vol up for continue when you see the picture, connect your phone and flash.
Also, please, about that, read here on xda and see tutorials on youtube, this has been answered multiple time and.i am one of rare users that will thoroughly help in answered questions.
I followed the instructions and flashed the phone. It did not help.
Any other ideas? One of the phones we got was brand new! I can't imagine there is a faulty chip in 3 out of 6 phones?
I am frustrated.
liz.la said:
I followed the instructions and flashed the phone. It did not help.
Any other ideas? One of the phones we got was brand new! I can't imagine there is a faulty chip in 3 out of 6 phones?
I am frustrated.
Click to expand...
Click to collapse
Are they unlocked? Of they are try another carrier, or try somewhere where the signal is at it's best reception.
If these simple methods don't work just get it analyzed in the service center, i doubt it can be software problem because you tried with another rom, also, when you'll try maybe changing carrier or going around town to see if it works, and it doesn't, then it is hardware problem, unfortunately.
Thank for all your help.
Nothing seemed to work.
I did try another carrier and it did not work.
I just can't imagine that 3 out of 6 phones have the same problem and 1 of them is new.
Could it be that the 3/4 G only works in the USA and not in foreign countries?

Problem: Network signal unstable/weak

Hello all,
I do have the following problem which is not new and mentioned in other threads but there is no solution and the threads are quiet old - so I hope it is OK to start a new one:
My LeMax2 is constantly dropping the network signal and the signal is in general very weak (I can only get calls outside, Internet is working irregular "sometimes", outside only. After arrival signal was fine. No difference. Flashed a couple of different custom roms, still fine. Ended up using SmallEUI. After a while (maybe two weeks) signal dropping began. What I tried so far:
- Flashed alternate modem file from SmallEUI, no difference.
- Switched rom back to india20s. Problem stayed the same. -
- Switched to LOS13 (which is still running).
- Entered *#*#4636#*#* switched and set GSM/UMTS band to automatic. Problem got worse.
- flashed various modem files, no difference
- renewed APN settings. No difference.
- Found about 4 threats regarding this problem, can not find a solution. This is exactly my problem: https://forum.xda-developers.com/le-max-2/help/mobile-network-problems-le-max-2-6gb-t3507500
Help? Please? What can I do now?
TOM
Nothing? None? Any idea? A little desperate here tbh...
ToeOfMoe said:
Nothing? None? Any idea? A little desperate here tbh...
Click to expand...
Click to collapse
Have you looked into your carrier? Maybe it's not a device problem..... Try a signal app to see if your connecting to the right bands, getting a good enough signal ....
Have you tried a factory reset?
When I was with T-Mobile they cut service in my area without letting customers know, I ended up buying a signal amplifier for my house to finish out my contract.
Supertacomonkeyexplosion said:
Have you looked into your carrier? Maybe it's not a device problem..... Try a signal app to see if your connecting to the right bands, getting a good enough signal ....
Have you tried a factory reset?
When I was with T-Mobile they cut service in my area without letting customers know, I ended up buying a signal amplifier for my house to finish out my contract.
Click to expand...
Click to collapse
Hey,
thank you for your reply. I put the SIM card into another phone and it worked like a charm. So I think it is not the carrier. Rechecked the APN settings also. Regarding the LTE band I am not sure. Most of the time I only get a H+ connection so no LTE band at all. Thing is: The connection was really good with this phone in the beginning.
Factory reset: Yes, and even more (flashed 6 different roms I think and various modems)
Best,
TOM
x829 no signal
i lived in ireland i have x829 from banggood i don't have networking signal strange when i when battery is 0% turn off phone after Charge the battery signal come back for few minutes after again disappear
I have the same problem. I am living in India, and the signal drop is very frequent.
Earlier i only used to get H+, but from few days i get the LTE band but the signal fluctuates almost every second and very unstable - especially the data. The whole mobile network keeps dropping also frequently. Been a pain in the but*
Using RR v5.8 official
This thing solved the LTE stability problem for me:
Type *#*#4636#*#* on the dialer
select phone info
Click the menu on top right on action bar
Select radio band and select band 43
I get decent speeds with some sudden boosts from time to time. PS I am using Airtel in India.
I have the same problem. I am living in sri lanka, and the signal drop is very frequency The whole mobile network keeps dropping also frequently. Been a pain in the but*
i wish to get updates on this problem, cause this is a pain. tried every method mentioned. tried different new roms (rr, LOS, Eui, stock 26s and 21s roms)
Maybe someone has solutions?
joey86 said:
I have the same problem. I am living in India, and the signal drop is very frequent.
Earlier i only used to get H+, but from few days i get the LTE band but the signal fluctuates almost every second and very unstable - especially the data. The whole mobile network keeps dropping also frequently. Been a pain in the but*
Using RR v5.8 official
Click to expand...
Click to collapse
Hey, did you have success in resolving the issue?
I had problems too with my le s3 x626, it didn't recognize the sim card anymore, froze, and had to force reboot. Luckily, it was a battery issue. For some reason when the phone goes under 10%, it does that. Easily solved upon charging (happened more than once).
Same issue in the philippines
Heyyo, I'd recommend looking into AEX as @shivatejapeddi recently made a bunch of changes for VoLTE and carrier settings that might help.
Otherwise? It could be your carrier might need further apn and carrier configuration changes in order to work at least on custom ROMs.
Another thing to try? Replacing your /system/etc/apns-conf.xml with this one from the Pixel 2 XL. Download it > reboot to TWRP > mount system > make a copy of that /system/etc/apns-conf.xml somewhere as a backup > replace the /system/etc/apns-conf.xml with the one downloaded > reboot to system > reset apn configuration to defaults to force ROM to reload apns-conf.xml
https://drive.google.com/open?id=1Fa-icWihAwcF0dzkbuSU3p5IKig9b6H_
---------- Post added at 09:52 PM ---------- Previous post was at 09:50 PM ----------
ongkal said:
Same issue in the philippines
Click to expand...
Click to collapse
magandang umaga! I'm mestizo and my wife is a Filipina, thus my son is second generation mestizo hehe. What carrier you with? I can try and look into it but no guarantees I can fix it.
Please try the above apns-conf.xml to see if that works
Has anyone found a solution for this problem? I think I have tried every rom and every medem file but no luck...The one thath works best for me is EUI 30s from Crisbal, but still i some times lose the networksignal from time to time
I hae let phone here I CANADA. same prob. Phone ..drops service every 5-10 mins. Carrier is not the problem. As.ive tried many
same problem
leeco le 2 x526 : signal if is starting , after i enter inside building ...it drops instant .... try different stock roms . version .and custom roms (now i am on RR 6.0 - good for camera ) .....baseband of my carrier are recognise , 5 diff. modem firmware .... nothing .... any sugestion is worth trying ..... lets find the solution together .
Ok this is super weird but the Leeco Le Max pro I used had the same issue. BUT. When I'd switch on the hotspot, and let someone connect to my Leeco, they get unrestricted LTE speeds. I cannot use my phone data plan but others can using my wifi So. I don't know exactly what's the issue. All those with this issue do check their hotspot capabilities. Thank you.
dllungu said:
leeco le 2 x526 : signal if is starting , after i enter inside building ...it drops instant .... try different stock roms . version .and custom roms (now i am on RR 6.0 - good for camera ) .....baseband of my carrier are recognise , 5 diff. modem firmware .... nothing .... any sugestion is worth trying ..... lets find the solution together .
Click to expand...
Click to collapse
same problem
tried everything, the last one to do for me is REWRITE IMEI on the phone, i noted a strange IMEI=0 or some difficult in reading it (x526 from myefox.it)
Dialing *#*#4636#*#*
Hi devrookie,
I did it as you mentioned in your comment above...didnt worked
Selected radio band...there is no option of 43 infact there is nothing to select...
anyone got this resolved guys? i just bought two leeco x520 phones and both have the same issue. wifi keeps dropping over and again every 10 seconds or so. It's like a loop........ drop .. reconnect .. drop .. reconnect .. and so on. tried two roms so far, currently on lineage os 16.0 and have the same issue on this rom too. on top of the connectivity problem, a new problem has came up .. the phone shuts down while playing games which is super annoying. and the phone heats up a lot while recharging the battery. i'm so fed up

Problem connecting to mobile network

Hello
I recently purchased this phone for a family member. We set it up yesterday, and found that the sim card from their old phone that we've inserted isn't capable of allowing the phone to make/receive texts/calls. It just says something along the lines of "Can't connect to mobile network", despite showing signal bars. When I checked the connectivity bands against the mobile network's, it appeared that the phone should at least support 2G & 3G. I'm in the UK and haven't modified the ROM.
Has anyone had this issue before, and does anyone know of a fix? I've heard that some of the newer official ROMs are better for connectivity, but I don't want to flash the phone and void its warranty if the fault lies with the phone.
Many thanks
Luke
Heyyo, hmm can you please provide more information?
Link to the exact product purchased
What country and network is being used?
Does your device say x820, x821, x822 or x829 on the back of it? If not does it say what it is in the settings > about phone menu?
Can you please specify which version of EUI ROM it is running? Should be in Settings > About Phone.
As for upgrading EUI ROM versions? That will not void warranty as long as you don't have the x829 with EUI ROM 5.8.016s.... which is what I had and x829 with 5.8.016s is garbage. So many darn problems with it and has software updates disabled even via recovery update.zip... I didn't stay on it long since LineageOS 13.0 at the time officially came to the x2 heh
ThE_MarD said:
Heyyo, hmm can you please provide more information?
Link to the exact product purchased
What country and network is being used?
Does your device say x820, x821, x822 or x829 on the back of it? If not does it say what it is in the settings > about phone menu?
Can you please specify which version of EUI ROM it is running? Should be in Settings > About Phone.
As for upgrading EUI ROM versions? That will not void warranty as long as you don't have the x829 with EUI ROM 5.8.016s.... which is what I had and x829 with 5.8.016s is garbage. So many darn problems with it and has software updates disabled even via recovery update.zip... I didn't stay on it long since LineageOS 13.0 at the time officially came to the x2 heh
Click to expand...
Click to collapse
Thanks for your reply
This is where I ordered it from: LeTV LeEco Le Max 2 X820 5.7 inch 4GB RAM 32GB ROM Snapdragon 820 Quad core 4G Smartphone
I live in the UK and the phone's using a Tesco Mobile SIM
The device is the X820
I don't have the phone with me right now, but I believe the EUI is 18s
I wasn't aware upgrading the ROM version didn't affect the warranty, that's nice to know
Hallo,
I believe I might have the same problem with the mobile network. In my case, I am quite certain that the battery is the problem. I got the phone some weeks ago, but I assume it was laying around for quite some time, which might be not very beneficial for the battery? Anyway, the voltage should be 4.4 V after loading and as long as the voltage stays above about 4 V, I have good data connection. But after a while, the voltage drops below 4 V and I do not have any connection anymore, despite showing all signal bars! Is it possible, that you see a similar behavior with your phone? If you load it on a charger, does your data work?
Peter_Kroetz said:
Hallo,
I believe I might have the same problem with the mobile network. In my case, I am quite certain that the battery is the problem. I got the phone some weeks ago, but I assume it was laying around for quite some time, which might be not very beneficial for the battery? Anyway, the voltage should be 4.4 V after loading and as long as the voltage stays above about 4 V, I have good data connection. But after a while, the voltage drops below 4 V and I do not have any connection anymore, despite showing all signal bars! Is it possible, that you see a similar behavior with your phone? If you load it on a charger, does your data work?
Click to expand...
Click to collapse
I personally do not experience this but I'm 100% sure that the voltage from the battery should stay around 4V. If this happens try turning on the battery saver and dimmer your screen so you can spread the battery load. Maybe it will work idk.
LameMonster82 said:
I personally do not experience this but I'm 100% sure that the voltage from the battery should stay around 4V. If this happens try turning on the battery saver and dimmer your screen so you can spread the battery load. Maybe it will work idk.
Click to expand...
Click to collapse
You are probably right in saying that the voltage should stay around 4 V. This is probably the case for new or at least well aged batteries. However, that seems not to be the case of my battery. According to the App that reads out the voltage, it sometimes drops to values as low as 3.6 V. Sometimes, the voltage recovers a bit, but typically, not enough to enable data connection, for which I believe to need at least around 4 V to work (reliably!).
Peter_Kroetz said:
Hallo,
I believe I might have the same problem with the mobile network. In my case, I am quite certain that the battery is the problem. I got the phone some weeks ago, but I assume it was laying around for quite some time, which might be not very beneficial for the battery? Anyway, the voltage should be 4.4 V after loading and as long as the voltage stays above about 4 V, I have good data connection. But after a while, the voltage drops below 4 V and I do not have any connection anymore, despite showing all signal bars! Is it possible, that you see a similar behavior with your phone? If you load it on a charger, does your data work?
Click to expand...
Click to collapse
Thanks for replying, and sorry for my late reply.
I've tried making calls with the battery at full charge, but I get the same result. It's really peculiar...
Luke25361 said:
Thanks for replying, and sorry for my late reply.
I've tried making calls with the battery at full charge, but I get the same result. It's really peculiar...
Click to expand...
Click to collapse
I purchased a X820 from China (TomTop.com) and the junk had an EXTREMELY LOW signal.I NEVER received network signal at home.I have to go near a cell tower to get signal,as soon i drive away from the tower (around 5 blocks)i lost signal and could not make or receive calls..Remember that the company LeEco went out of business and the phones we buy today are NOT made by LeEco but are made by many private factories in China and in reality are cheap clones.I send the junk back and purchased a X829.Now i have very good signal and connection never dropsJust return your phone is defective..Here is a video i had to send to tomtop.com in order to get a refund.
https://www.youtube.com/watch?v=NIOky1pjXKw&t=496s
Peter_Kroetz said:
Hallo,
I believe I might have the same problem with the mobile network. In my case, I am quite certain that the battery is the problem. I got the phone some weeks ago, but I assume it was laying around for quite some time, which might be not very beneficial for the battery? Anyway, the voltage should be 4.4 V after loading and as long as the voltage stays above about 4 V, I have good data connection. But after a while, the voltage drops below 4 V and I do not have any connection anymore, despite showing all signal bars! Is it possible, that you see a similar behavior with your phone? If you load it on a charger, does your data work?
Click to expand...
Click to collapse
I have exactly the same problem when the phone's battery level goes around 70% (~4v).
i.e. when battery drops below 70%, the network signal shows LTE with around 3 bars but there's no network connectivity and can't make/receive phone call. But as soon as I plug in the charger, everything works perfectly! This happens on all ROMs.
I wish there is a solution for this.
same problem for me .....
Today ,
NO WAY to have working Network mobile on a Leeco LE 2 x526 with last stock rom 28s installed on it. NOW i can call on 3G but no voice ,,,,, but i can't be called. .....after restart with / without APN / searchable 3G/4G network Digi.Mobile ...signal is lost and is cost me allot of time and energy . i even lost any hope .....(coul be a hardware problem ?)
Operation made until now
1.install 3 stock roms 19 , 21 and 28
2.install another 6 custom roms 6,7,8.1(miui , havoc, lin14.1 , 15.1, aosp extended ,Bootleggers. RR , Cr ,Small_EUI ,purenexus,cuoco )
3.reset SIM 1+2
4.sparse india image
5.write lost IMEI
6.write new baseband with DFS
7.flash modems firmware (MPSS (56347 , 61295 , 66782 and 68083))
8.try other Carrier SIMS ..... same problem
9.check any carrier server service ...nope
etc (rewrite a qcn file . different APN config , twrp 3.0.2.0 ydss )
I have real problems .....i need help (maybe someone have same problem or has read more infos from so many forums )
The same problem.
Only one person with name AGATSU83 something like this find the solution , and the solution never post it.
He help him LAZYE.
BUT I NOT UNDERSTAND he give us one site in russia and he told us that he find the solution.
I READ AND READ AND READ .........
BUT NOTHING.....
I BRICK MY PHONE 20 TIMES AND NOTHING.
MAYBE ONE DAY I FOUND THE SOLUTION AND I POST IT.
With a new battery we Can solve the problem? Anyone try it?
Luke25361 said:
Hello
I recently purchased this phone for a family member. We set it up yesterday, and found that the sim card from their old phone that we've inserted isn't capable of allowing the phone to make/receive texts/calls. It just says something along the lines of "Can't connect to mobile network", despite showing signal bars. When I checked the connectivity bands against the mobile network's, it appeared that the phone should at least support 2G & 3G. I'm in the UK and haven't modified the ROM.
Has anyone had this issue before, and does anyone know of a fix? I've heard that some of the newer official ROMs are better for connectivity, but I don't want to flash the phone and void its warranty if the fault lies with the phone.
Many thanks
Luke
Click to expand...
Click to collapse
I believe your phone is a X829. Someone installed the X820 firmware to sell it easier. It doesn't have Band 20 for 4G. Tesco mobile is working on O2 network and they're using Band 20 for 4G network. Despite that it should work on 3G. In my opinion you should install a custom ROM and check things there...
gagas1 said:
I believe your phone is a X829. Someone installed the X820 firmware to sell it easier. It doesn't have Band 20 for 4G. Tesco mobile is working on O2 network and they're using Band 20 for 4G network. Despite that it should work on 3G. In my opinion you should install a custom ROM and check things there...
Click to expand...
Click to collapse
Ended up just being too frustrating, so we returned it for a refund & bought a different phone instead...
It's a shame, aside from that one issue it seemed to be a great phone, especially for the price
Luke25361 said:
Ended up just being too frustrating, so we returned it for a refund & bought a different phone instead...
It's a shame, aside from that one issue it seemed to be a great phone, especially for the price
Click to expand...
Click to collapse
I made the mistake and only got a partial refund.. Didn't know it had the focus issue... At least I got nearly half the money back. Network is working fine as I'm on Three..
Got a new Le X526. Always telling me server erroranytime I try to browse on anything but I have full network

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