[Q] modem, LTE Issue????? help - AT&T Samsung Galaxy Note I717

Ok, I've had issues with this phone that began with a bad battery. I got a new battery through insurance and my problems continued, even worsened. The phone will lose network connection constantly. It will reboot on it's own or during use. This is the only way it will obtain network connection once lost.... I went to at&t a million times and they flashed it for me a few times, replaced my SIM card three timesthis month and no luck. I decided to be brave and root it with cyanogenmods latest 4.4.2 kitkat (which I love, props to them) and it still continues to do the same crap! It's getting old and im beginning to think it must be a hardware issue, but I read about flashing a modem for the phone. Does anyone know if this might solve the problem or is it likely a hardware malfunction?
It seems to cause the most issues when im not on wifi or when LTE is activated.
Tried the *#*#4636#*#* code to change the connectivity settings but the only option im allowed to use is the lte/gsm auto (PRL).
Any advice is appreciated.... my next option is shooting it with my shotgun and using it as a conversational piece at the office.... maybe a
A paperweight??
thank you for your time.

educateme said:
Ok, I've had issues with this phone that began with a bad battery. I got a new battery through insurance and my problems continued, even worsened. The phone will lose network connection constantly. It will reboot on it's own or during use. This is the only way it will obtain network connection once lost.... I went to at&t a million times and they flashed it for me a few times, replaced my SIM card three timesthis month and no luck. I decided to be brave and root it with cyanogenmods latest 4.4.2 kitkat (which I love, props to them) and it still continues to do the same crap! It's getting old and im beginning to think it must be a hardware issue, but I read about flashing a modem for the phone. Does anyone know if this might solve the problem or is it likely a hardware malfunction?
It seems to cause the most issues when im not on wifi or when LTE is activated.
Tried the *#*#4636#*#* code to change the connectivity settings but the only option im allowed to use is the lte/gsm auto (PRL).
Any advice is appreciated.... my next option is shooting it with my shotgun and using it as a conversational piece at the office.... maybe a
A paperweight??
thank you for your time.
Click to expand...
Click to collapse
Could be a modem issue, could be as simple as changing you APN settings. Where is your location? Could be affecting you a bit. Run a search, many have had this issue.
Sent from my SAMSUNG-SGH-I527 using xda app-developers app

educateme said:
Ok, I've had issues with this phone that began with a bad battery. I got a new battery through insurance and my problems continued, even worsened. The phone will lose network connection constantly. It will reboot on it's own or during use. This is the only way it will obtain network connection once lost.... I went to at&t a million times and they flashed it for me a few times, replaced my SIM card three timesthis month and no luck. I decided to be brave and root it with cyanogenmods latest 4.4.2 kitkat (which I love, props to them) and it still continues to do the same crap! It's getting old and im beginning to think it must be a hardware issue, but I read about flashing a modem for the phone. Does anyone know if this might solve the problem or is it likely a hardware malfunction?
It seems to cause the most issues when im not on wifi or when LTE is activated.
Tried the *#*#4636#*#* code to change the connectivity settings but the only option im allowed to use is the lte/gsm auto (PRL).
Any advice is appreciated.... my next option is shooting it with my shotgun and using it as a conversational piece at the office.... maybe a
A paperweight??
thank you for your time.
Click to expand...
Click to collapse
No need for target practice! Did you replace your phone through Asurion? If so, all replacement devices come with a 12-month limited warranty. How long have you had your replacement phone? We're here to help!
Thanks!
Asurion Social Media Team @AsurionCares
www.phoneclaim.com

AsurionCares said:
No need for target practice! Did you replace your phone through Asurion? If so, all replacement devices come with a 12-month limited warranty. How long have you had your replacement phone? We're here to help!
Thanks!
Asurion Social Media Team @AsurionCares
www.phoneclaim.com
Click to expand...
Click to collapse
No need to promote your own business here. You could have sent a PM for a company claim.
Sent from my SAMSUNG-SGH-I527 using XDA Free mobile app

I live in central Arkansas and I'm not exactly sure how to check my APN settings...?? And if it's a common issue based on location, why does AT&T not recommend a solution to anyone with problems? Or do they and I just don't know?

I've ran this phone on straightalk 3g for about a year. Recently upgtaded to a lte sim and loose signal a lot since. Miss calls. Don't get text. I have read certain art lte towers have this problem. Sounds good since my wife's s4 has same problem. Both phones ran fine and got calls on 3g sims

educateme said:
I live in central Arkansas and I'm not exactly sure how to check my APN settings...?? And if it's a common issue based on location, why does AT&T not recommend a solution to anyone with problems? Or do they and I just don't know?
Click to expand...
Click to collapse
I found the settings directly through the AT&T website but theyb only povide 4G HSPA+ settings.. which are not LTE.
Follow this steps and check if your APN settings match, and if they don't then just create a new profile with the settings in this link:
http://forums.androidcentral.com/go...ogle-nexus-5-t-lte-apns-network-settings.html
Techinically, this settings are stated to be for the Nexus 5, but the APN are carrier based, so regardless if it states Nexus 5 APN settings they would still work for our OG Note
You should be able to get to your settings by going to settings / wireless data & networks ---more / mobile networks --- Access Point Names
Hope this helps!

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

No Data Connection after Connecting to WiFi for long time

My DNA just has the Voice service after connecting to WiFi over night. The first thing I need to do after leaving home is flight mode on and off to get the phone back on the carrier's network data. It is annoying, Am I the only one here?
G-Nexus said:
My DNA just has the Voice service after connecting to WiFi over night. The first thing I need to do after leaving home is flight mode on and off to get the phone back on the carrier's network data. It is annoying, Am I the only one here?
Click to expand...
Click to collapse
I get the same problem. I have also experienced "preparing sim card" messaged several times. I hope the OTA update helps, I have not had the chance to install it as I am currently studying abroad.
G-Nexus said:
My DNA just has the Voice service after connecting to WiFi over night. The first thing I need to do after leaving home is flight mode on and off to get the phone back on the carrier's network data. It is annoying, Am I the only one here?
Click to expand...
Click to collapse
Its a common bug. My gf n I get it often
Sent from my HTC6435LVW using xda app-developers app
autolycus89 said:
I get the same problem. I have also experienced "preparing sim card" messaged several times. I hope the OTA update helps, I have not had the chance to install it as I am currently studying abroad.
Click to expand...
Click to collapse
Have you tried in gsm only mode? I have same problem and preparing SIM card issue doesn't come up in 2g mode. I was reading this kind of issue is produced most likely by a faulty 3g antenna.
Sent from my HTC6435LVW using xda app-developers app
I experience this problem frequently too. Not sure if there really is a fix for it. Toggling between airplane mode works for some people, reseating the SIM card, gently erasing the back of the sim card, applying 2 layers of tape to the sim card tray to keep the card seated appropriately, exchanging for a new SIM, putting phone into airplane phone and removing sim than replacing sim card, remove sim card than boot into recovery and clear cache and dalvik, etc.. yes I've tried most of these but to no avail. The OTA update may have helped a little I am not sure. Most believe it is a hardware issue that really can't be permanently fixed. If anything else is found let us know. Such an annoying problem that totally ruins this amazing phone.
There's different issues being discussed here. It sounds like you're having the issue where you need to toggle airplane or network sometimes when switching between networks or from WiFi to mobile data.
It's not device specific, there's some decent articles on it and in the early days we thought it was a Verizon issue. But it's actually a Sprint problem too I learned on accident when I was trolling their forums.
When the network is activated, on a device with a SIM card on Verizons network, the preparing SIM notification is actually describing a process very similar to *228 back in the olden days before LTE that was done when first activating a device on the CDMA network. The LTE network is different in that everytime it connects to the network is does that SIM activation process.
I know on my networks here, there's a changeover in one place it happens about 50 percent of the time.
If that's what is happening to you and toggling airplane fixes it, I think it's an LTE/network symptom and not due to a faulty device.
However I have a device I'm about to warranty with a hardware failure I'm thinking. It gets data great but absolutely no voice ever, never had an incoming call or anything. Or made an outgoing call in the month I've had it. It doesn't bother me I didn't buy this thing to talk on, but I'm donating the device so I'm going to have it fixed.
Anyway, from all the OP has posted so far, I'm not feeling like it's a hardware or device issue, however as more info develops that opinion may evolve.
Sent from my HTC6435LVW using Tapatalk 2
U r the man Charlie. I am having an identical issue as op. And based on occurrences relevant to location it seems that this is only an issue when under 4g service-atleast for me-. Toggling airplane mode reactivates SIM as u said and restores full functionality. However, I have noticed the time needed to pass for said issue to reoccur is significantly shorter unless a full restart is preformed. If fastboot is enabled the issue persists. My question is this; if this is a network issue -which I'm sure it is at least in part- what software wise -if anything- could be going on a full restart fixes?
Sent from my HTC6435LVW using xda app-developers app
I'm a gsm user and I'm having the issue in a non 4g lte network. I have preparing SIM card every couple of minutes. If I toggle to gsm only mode everything is perfect, not even a single issue. Looking to the logcat, when the error comes up, it shows a message about ICCID number doesn't match stored one and then invalid radio technology. Is this software or hardware? I'm really confused. I've already tried everything from software side, kernels, radios, roms, RUU to stock.
Sent from my HTC6435LVW using xda app-developers app

[Q] mobile data + active call + AOSP?

Longtime Sammy ROM (mostly Wanamlite) user here, dabbling now with new 4.3 ROMs based on AOSP, namely Carbon and PA. I like both of these releases and for the most part few problems but one:
The precise moment I start a cellular call, my mobile data connection drops. 3G, H, H+, doesn't matter. As soon as the call is over, the mobile data connection immediately resumes. Sorry if this is a noob question, but am I missing something here? I've played with a number of ro.ril build.prop settings, none of them seemed to influence this behavior a bit.
This is a deal killer for me, I commonly run IM clients and participate in web data conferences while simultaneously making phone calls. This works against AT&T service on the Sammy ROM.
fredless said:
Longtime Sammy ROM (mostly Wanamlite) user here, dabbling now with new 4.3 ROMs based on AOSP, namely Carbon and PA. I like both of these releases and for the most part few problems but one:
The precise moment I start a cellular call, my mobile data connection drops. 3G, H, H+, doesn't matter. As soon as the call is over, the mobile data connection immediately resumes. Sorry if this is a noob question, but am I missing something here? I've played with a number of ro.ril build.prop settings, none of them seemed to influence this behavior a bit.
This is a deal killer for me, I commonly run IM clients and participate in web data conferences while simultaneously making phone calls. This works against AT&T service on the Sammy ROM.
Click to expand...
Click to collapse
Are you sure you have the GT-i9300 on AT&T and NOT the AT&T version?
I too am on att and use an i9300 not sure but i think the att version would say 4g instead of h+ or 3g. anyway What I do is I always use Stock rooted roms. I alter the default apn to geta much better signal. att does not recognize the I9300 as an sgs3. they frankly do not know what it is . also they do not support it. so they put the phone in the wap cingular default apn. this is also used for their prepaid and dumbphone customers. you can manually change apn settings.to get better data speeds and signal.
I have been researching on this for a few days. It seems like it is a motherboard issue with several GS3s... This sounds stupid, but try to hit the back of your phone really hard.. If the sound is workign for five minutes after doing this, it's most likely a hardware issue, just like mine..
i would think that hitting the back of the phone really hard would most likely cause damage to the motherboard and other microelectronic components. the op has stated that he has problems with his signal while using aosp roms. but the problems disappear on sammy roms. that would indicate that his problem is Not hardware related rather than software or incorrect settings in build prop.
I do believe you when you say you have hardware problems. if you are hitting the back of your phone as you have recommended to the op. it is almost a certainty that you have damaged the fragile internal mechanisms inside your phone.
Yeah! But the problem is that this is a known hardware problem with the S3. It's very annoying cause I love my S3.. Would be a bummer to sell my iphone 5 just to get a new S3.. I was thinking of buying a motherboard and install it myself. I just hope that the fault lies within the motherboard components
well first you need to find out if the problem is hardware related. my suggestion is to get your phone back to stock if it isn't already. then see if you have the same problem. if yes then try factory reset . if that does not work then you probably do have a hardware problem . but it is probably your baseband or antenna rather than your motherboard, also check that your apn settings are correct,
if you decide to send it to a service center do not tell them that you have been hitting your phone, and please don't advise anyone to hit their phone either, these devices are not cheap and hitting them will cause physical damage which is not covered under warranty.
Sure I understand that advicing someone to hit their phone is stupid. But taking from my example I've tried a bunch of ROMs, a bunch of radios. I've also reverted to stock ROM with the same problem.. the audio comes and goes when knocking the phone behind.. I've also tried to reassemble the whole phone myself. I've reattached every wire there is and the problem still persists.. This is a very weird problem
definitely sounds like hardware problem either speaker or wire connection.if the phone is under warranty then send it to samsung. if not then find a reputable repair shop that understands how to fix it. shop around because too many places only know I phones. also you can go for a paid repair from samsung. may cost more but at least you know it will be fixed right.
Thanks all for the replies. First, I have no plans to hit my phone nor do I have the audio issues the other poster hijacked regarding
rootSU said:
Are you sure you have the GT-i9300 on AT&T and NOT the AT&T version?
Click to expand...
Click to collapse
I do have an i9300, good question though.
ashraf sharif said:
I too am on att and use an i9300 not sure but i think the att version would say 4g instead of h+ or 3g. anyway What I do is I always use Stock rooted roms.
Click to expand...
Click to collapse
When you say "stock", do you mean a rooted Samsung ROM?
ashraf sharif said:
I alter the default apn to geta much better signal. att does not recognize the I9300 as an sgs3. they frankly do not know what it is . also they do not support it. so they put the phone in the wap cingular default apn. this is also used for their prepaid and dumbphone customers. you can manually change apn settings.to get better data speeds and signal.
Click to expand...
Click to collapse
Worth noting, I do not have LTE enabled on my AT&T plan (I have a grandfathered unlimited iPhone data plan) so can't use the lte or other "4G" APNs out there. I tend to use the wap.cingular APN as none of the other posted alternatives work better (or at all). What APN do you use out of curiosity?
Since my OP, I've also tried SuperNexus 3.0, and saw precisely the same issue. I've fiddled with bringing in applicable ro.ril build.prop settings from Wanamlite's ROM, checked my modem (it's the same between Wanamlite and the AOSP ROM's I've tried, I9300XXEMB6), tried different APN's nothing seems to work.
One thing I haven't tried, is to use a well-established AOSP 4.1 or 4.2 ROM.. may do that later if no other bright ideas come along.
att apn settings
this is what I use. just one apn called PHONE . I am in new York city. I don't know if this will work for you where you are. I am rooted and everything else is stock
Worth noting, I do not have LTE enabled on my AT&T plan (I have a grandfathered unlimited iPhone data plan) so can't use the lte or other "4G" APNs out there. I tend to use the wap.cingular APN as none of the other posted alternatives work better (or at all). What APN do you use out of curiosity?
Just some info I am in UK using correct APN from provider and I have the same issue on 4.3 roms when on rootbox 4.2.2 I could use internet while on a call hadent noticed that had changed till I seen your thred

Internet settings for Life Mobile (EE) in UK

Hello there,
I have been using Tesco Mobile with my Redmi Note 2 for a couple of months now and have had no problem. I decided to switch networks to a VPN called Life Mobile. They use EE's network in the UK. Since putting in the sim card today I have not been able to connect to the mobile network. I am wondering if anyone else on this network with this phone could help? I have called Life Mobile's helpline and all they wanted to do was run me through EE's apn settings. I had already used their app and also searched elsewhere on the web to find a few different APN settings but none of them worked.
One thing I'm wondering about if whether or not the custom ROM/firmware (MUI 7 I believe) that the phone shipped with (bought online from China by the way) is having anything to do with the internet problems. I get the feeling the customer service for Life Mobile were fobbing me off when they said that maybe my phone just isn't compatible with their network. Phone calls and texts work fine by the way.
Does anything think flashing the phone to the standard android ROM that's available would have any affect on the internet settings. I'm no mobile expert, and with the phone not being on general sale in the UK yet as far as I know, I would appreciate your help to get this internet/mobile data settings issues sorted, as I do use my phone for work.
Thanks in advance for comments and help.
I definitely know that the ROM that came with my phone from Gearbest was the worst piece of software that I have ever used in my life... ever. Check your MIUI build number and see if it's something like 5.xx.xx or 7.xx.xx. If it's something more like 77.55.66, then you have a knock-off and it may be eating your battery, performance, and experience (the original ROM Gearbest flashed on my phone had so much bloatware that the antivirus warned me about one of the programs every ten minutes, and heated up significantly on the home screen). If you have an unofficial ROM, try flashing a developer weekly or stable.
Hi all.
Well, would you believe it, I have spent a large part of the day trying to figure this out and finally I've done it. I'm not quite sure how but I've done it. I'll explain briefly to help anyone else who may be facing the same problem. It seems that changing the network preference setting within the sim settings from LTE to 3G did the trick. Life Mobile does not support 4G as far as I'm aware. That's no problem for me as I'm perfectly happy using 3G when necessary. After doing that and fiddling with the network settings, eventually reverting back to the automatic selection of the network as EE and using the APN default settings as given by the sim when it first was entered into the phone, things suddenly start to kick into life and we had INTERNET!
Thanks for your help in resolving this, and happy New Year to everyone.
same problem
Hi mate,
I'm having the same issue now on life mobile, I've checked all the settings are right but still not picking up mobile data. Any suggestions? Constantly restarting it hoping something will be different but nothing so far.
Cheers
bn09gp said:
Hi mate,
I'm having the same issue now on life mobile, I've checked all the settings are right but still not picking up mobile data. Any suggestions? Constantly restarting it hoping something will be different but nothing so far.
Cheers
Click to expand...
Click to collapse
Driving me crazy as well (on a Lenovo K3 Note). Still have the Tesco SIM in there. Was going to port the number on Monday, but might get them to take the damn thing back!
Tried all the suggestions above, but nothing working. Tried both SIM slots with and without the other SIM, but nothing. Grrrrr....
bn09gp said:
Hi mate,
I'm having the same issue now on life mobile, I've checked all the settings are right but still not picking up mobile data. Any suggestions? Constantly restarting it hoping something will be different but nothing so far.
Cheers
Click to expand...
Click to collapse
Well, they sent me a new SIM card and I had all the same problems until I switched on "data roaming" and it now works fine (it didn't do anything with the last SIM though, when I tried it in another phone, I had to have date roaming on in order to even get a regular signal- data still did not work). I have seen transient "R" occurring when the SIM was activated/deactivated so had suspected this as a problem.

Elephone S8 Weird issue with network

Hey all,
I am hoping somebody can guide me in regards to an issue I am facing.
I was working on my car a few days back and left the Elephone S8 on the car seat not realizing that it was being hit directly by the sun. After I was done, I picked up the phone and it was very very hot. I then went inside and let the phone cool off.
Since the above, I notice that I struggle to pick up reception. I have tried different firmware, replaced sim cards, everything. It seems to only be affecting certain MHZ bands as 4G LTE work, 3G works fine, and 2G works find but not always.
I have a feeling the 2G is having issues but maybe only certain bands. I do not think it is software related but have no idea where to even start on the hardware side. I first want to try scan for towers and see which bands they use and try see which one could be giving the issue. I don't expect it to just be a lose connector as the phone has not been dropped and I have only been using it for 2 weeks. If I do send it back under warranty for repairs, they will never pick up this issue.
Elephone S8 loss of network issue
Hi.
I think is a hardware issue as the same thing happened to me after 3 weeks perfect use.
I think has nothing to do with the sun as for me happened on a snowy Sunday 10th of December in London.
I suddenly noticed that when sending email the sending would start fast and after a 2-3 seconds the network will drop to 3G and stay like that for long time until the mail app stops sending process and the phone goes back to LTE 4G.
Also when dialling a number the phone will drop from 4G to 3G and than loose the connection straight away.
When indoors the phone would have trouble registering to network for ages without success.
I picked up 4 different pay as you go cards to make shure that is not my network but still no success.
All documented in the support ticket to GB and yesterday have send it back for a refund.
I really like the phone but i am reluctant to buy another if the issue persist so will wait and see.
Hope some more comments will follow to highlight the problem and influence a solution to this.
Cheers
I have the same issue - my wireless connection inside my home keeps dropping and connecting off and on again and again - I have two routers and maybe as I move from room to room it tries to connect to the closest router or something like that - not sure if there is a way to fix it without doing something in the routers.
Wifi
kishanach said:
I have the same issue - my wireless connection inside my home keeps dropping and connecting off and on again and again - I have two routers and maybe as I move from room to room it tries to connect to the closest router or something like that - not sure if there is a way to fix it without doing something in the routers.
Click to expand...
Click to collapse
Same problem here
My network problems are a little different. I don't have problems connecting to different wifi networks (home and work) but the phone does not activate mobile data when leaving a wifi network. I always have to restart the phone when I want to use mobile data (3G).
Kind of the same problem. Have my S8 for about a month. First it has a wifi network. When I leave the place where it is connected to wifi, it goes to 4G. But when I come back to a place with WIFI, the phone does not find any WIFI network. I have to reboot the phone. Soft reboot(a little faster) will also do/work.
Are you guys on the stock ROM?
Were you guys able to resolve your issues
MOTzYouTube said:
Are you guys on the stock ROM?
Click to expand...
Click to collapse
I have the same problems with stock rom and eragon rom. I don't have a solution but I'm still hoping for a new update.
For now I found out that turning flight mode on and off again helps to switch between wifi and mobile data, so it is not necessary to reboot the phone every time.
I can confirm as well that Eragon won't resolve 3G / 4G network issues.
I'm using my S8 for a week now with only one problem, call related.
No wifi problems but after one day of usage I couldn't use mobile data anymore I almost re-flashed my phone (unlocked bootloader, rooted and using Xposed). Turned out my provider f*cked things up. Probably because Elephone is a not known brand here. It took me some time to convince the agent on the phone that I do not own a Samsung S8 lol.
Problem was solved at the providers end.
wim69 said:
I'm using my S8 for a week now with only one problem, call related.
No wifi problems but after one day of usage I couldn't use mobile data anymore I almost re-flashed my phone (unlocked bootloader, rooted and using Xposed). Turned out my provider f*cked things up. Probably because Elephone is a not known brand here. It took me some time to convince the agent on the phone that I do not own a Samsung S8 lol.
Problem was solved at the providers end.
Click to expand...
Click to collapse
This information sounds interesting. How did you manage to 'convince' the providers agent that it is not Samsung? And what did you tell it instead?
Steve the issue you have is different. Your issue won't be resolved that way.
You would need an app that switches to 3G/4G if WiFi is not connected.
Happy too soon. After one day with mobile data it's gone again. There's a cross in the lower right corner of the mobile data icon in the status bar. I'll be calling my provider again tomorrow morning.
---------- Post added at 10:10 PM ---------- Previous post was at 10:04 PM ----------
the steve said:
This information sounds interesting. How did you manage to 'convince' the providers agent that it is not Samsung? And what did you tell it instead?
Click to expand...
Click to collapse
I'm not sure if the fact that I own a brand that is unknown here causes the mobile data problems. The problems I'm running into atm are
- mobile data problems, 4G is connected, but no internet
- fingerprint scanner doesn't work with my banking app
- backlight bleed in the middle of my screen
- after 3 out of 4 calls, phone freezes for about 30 seconds
- rattle in fingerprint scanner
I guess I'm about to find out how good the return policy at Banggood is ?
I highly recommend that you return the phone now.
There are so many issues with the phone that it's just not worth the time.
Hi guys, I just got the phone, but mobile data is not working. Am I missing something?
Can you attach a screenshot
screenshots: https://photos.app.goo.gl/1XdRma9YJacb4b2b2
Does your sim card work in another phone? If so, are the apn settings the same?
I managed to resolve the issue.
I'm trying to figure what went wrong at start. When I got a phone I inserted both SIM cards like this:
SIM 1 - my business phone number - provider 1
SIM 2 - my personal phone number - provider 2
I wanted to use data only on my personal phone number, so I disabled data on business number. What happened is my business SIM downloaded APN info on first boot (i assume), and then my personal SIM used this APN (which was incorrect).
To resolve issue I first inserted my personal SIM to slot 1 alone and booted. Then I changed APN profile to match my old phone's, turned off phone and inserted my business SIM to slot 2 and booted.
Now data works fine. Obviously there was APN issue but how come that phone didn't get correct APN settings per SIM?
Thanks for support!

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