I've recently noticed a weird network bug on LFB. If the phone loses signal (on subway etc.) with data on, when signal is available it acts as though the SIM was refused by the network continuing to display Emergency calls only. If I turn data on and off it gets weirder (see screenshot).
The only way to fix it is too reset the radio, with flight mode, or *#*#4636#*#*
It's definitely not a hardware fault since, as you can see it still can connect to the network. It just acts as though the connection was refused (or alternatively does something weird that causes it to ACTUALLY be refused)
Anyone else experienced this??
The phone is an original BTU using unmodified LFB on China Unicom
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Are you able to set/receive calls or send/receive SMS? What about USSD codes to your provider?
I've already read about other users complaining about this issue, I guess it's a software-bug in the display.
No. I'm not sure if HSDPA will work in the example pictured. I was in a hurry to make a phone call so just quickly snapped the screenshot then reset the modem.
Messages will get service unavailable. Incoming ones don't get received until I reset
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LFB is a poor modem firmware .
jje
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esist said:
I've recently noticed a weird network bug on LFB. If the phone loses signal (on subway etc.) with data on, when signal is available it acts as though the SIM was refused by the network continuing to display Emergency calls only. If I turn data on and off it gets weirder (see screenshot).
The only way to fix it is too reset the radio, with flight mode, or *#*#4636#*#*
It's definitely not a hardware fault since, as you can see it still can connect to the network. It just acts as though the connection was refused (or alternatively does something weird that causes it to ACTUALLY be refused)
Anyone else experienced this??
The phone is an original BTU using unmodified LFB on China Unicom
Sent from my GT-I9300 using xda app-developers app
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Click to collapse
Yes, I've experienced the same thing a couple of times since LFB on carrier Telia in Sweden.
It reminds me of the phone/modem problems with the SGN which they never fixed before I sold it.
/Per
JJEgan said:
LFB is a poor modem firmware .
jje
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Click to collapse
2nd that, flashed the lf2 modem and all my problems with the modem radio
Went away
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Does the DXLF3 modem work with LFB and if so, is anyone able to post a link plz?
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Simmo3D said:
Does the DXLF3 modem work with LFB and if so, is anyone able to post a link plz?
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About four threads down from this is a thread titled "Modem collection" But I guess it's tricky to find:
http://forum.xda-developers.com/showthread.php?p=28033523
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Where do people still lose signals on a subway?
Deusdies said:
Where do people still lose signals on a subway?
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New York City!
Deusdies said:
Where do people still lose signals on a subway?
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Melbourne Australia too.
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Anyone recommends a modem to flash on the XLFB rom? I am also having problems.
Deusdies said:
Where do people still lose signals on a subway?
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Click to collapse
London
Deusdies said:
Where do people still lose signals on a subway?
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Click to collapse
Washington D.C. has no GSM coverage inside the tunnels. Only some stations have coverage. Only Verizon and Sprint with CDMA devices have service on moving trains.
juliano_q said:
Anyone recommends a modem to flash on the XLFB rom? I am also having problems.
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Click to collapse
You can flash DXLF3.. It works so much better than the LFB radio.
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Deusdies said:
Where do people still lose signals on a subway?
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Beijing.
Well 2G is okay. But it sometimes will lose it briefly in the transition from 2g to 3g.
Only Beijing subway line 4 has China unicom WCDMA coverage. the others are limited to 2g at best (except the overground lines, but even they are patchy)
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Simmo3D said:
Does the DXLF3 modem work with LFB and if so, is anyone able to post a link plz?
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Click to expand...
Click to collapse
Dowload omega files from the market and choose modem to download.
Install zip from recovery
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Having updated to the stock LFB ROM and modem (UK, unlocked, unrooted), I'm really perplexed about the behavior of the phone data reception:
(a) 2 weeks ago, I tried using data connection in a friend's flat in Balham (London), could not get ANY data connection all weekend.
(b) Last weekend, data was consistently perfect and fast anywhere in the same flat, all "H+" 8Mbit and lovely.
(c) This weekend, same place but NO reception again, not a saussage. Voice phone worked fine, just no data at all.
And, yes, I've seen "emergency calls only" sometimes even when there is apparently a strong signal.
Back home again (Portsmouth), phone works fine.
On the plus side, battery consumption is wonderfully low!
Can anyone explain what's going on? It feels like the data connection is sometimes reluctant to "log in" or whatever is does! It seems to have a mind of it's own.
Thanks!
You may want to try another modem like DXLF3. It has better data network stability especially in cities or areas with faint signal.
I am planning to upgrade to the LFB, but i am not rooted. Want to be sure if i have problems with the modem signal, do i have to be rooted to install the new modem driver??
Thanks in advance...
Related
Hi
Really weird problem my s3 has Been working fine until I woke up this morning and it is showing no mobile network but allows data connection still but not able to make any calls.
I am on standard BLG8 ROM and LH1 modem stock and not rooted
View attachment uploadfromtaptalk1345616045347.jpg
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And you're not connected to wifi?
I suggest removing and reinserting the battery and SIM.
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I'm at work so got no WiFi. Will try taking out the battery and SIM and try again thanks
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Right I turned it off took the SIM out booted back up without SIM the rebooted again with SIM but the signal still keeps dropping off I only get signal for a few seconds. I normal get really good signal where I am. Also battery is dropping quicker then normal I guess that's down to searching for signal though
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I have asked a few people around my area and it seems to be a problem with orange UK
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bginders said:
I have asked a few people around my area and it seems to be a problem with orange UK
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Click to collapse
orange/t mobile are doing quite a bit of network repairs and upgrades at the moment ahead of 4g, so that may account for it, try going networks and selecting t mobile, always get better signal like that here
bginders said:
Hi
Really weird problem my s3 has Been working fine until I woke up this morning and it is showing no mobile network but allows data connection still but not able to make any calls.
I am on standard BLG8 ROM and LH1 modem stock and not rooted
View attachment 1275018
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Click to collapse
I had this Exact problem last night!!!! I was on orange, unlocked it, put in my o2 contract SIM, and the exact same thing happened. works well with a 3 SIM card just not O2. So now I have a SIM card full of mins and texts to use , but I can't use it!
slaphead20 said:
orange/t mobile are doing quite a bit of network repairs and upgrades at the moment ahead of 4g, so that may account for it, try going networks and selecting t mobile, always get better signal like that here
Click to expand...
Click to collapse
Thanks for the information that clears it up for me
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I am having problem in accessing mobile data from day I started using JB leaks. I am getting H+ signal but not internet. It works some times. May be it's just coincidence. Is anyone having this problem?
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i dont believe there have been many threads reguarding your issue....of having a network but with no internet.
i assume you have run down the typical trouble shooting
APNS
MODEMS
ECT....
Oh, and when you switch back to ICS does it start working agian?
APN looks fine.
I am using the Odin version of LI5.
Going back to ICS - Naaah. ...
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http://forum.xda-developers.com/showthread.php?t=1858813
I'm having a very similar problem on my UK handset on orange running latest jellybean Rom.
There are times when I am trying to load an internet page or xda subscribed thread for example and the phone shows full signal and the data is switching between 3g and h+ on and off and the arrows show nothing happening or data transfer.
I normally end up exiting the page/app and restarting it.
Is this a modem problem? Do I need to flash a different one?
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Installed res remix two days ago it was working fine network coverage seemed fine... then I woke up and I had emergency calls only no signal... Tried re-flashing didn't help. Tried a stock rom and it still didn't work.. simcard works fine in friends phone, and a simcard on the network Three works fine in my phone :/ so i'm abit lost at what to do, I'm pretty new to all of this so please ignore my stupidity lol
I think it has something to do with the baseband or modem
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Varcolac said:
I think it has something to do with the baseband or modem
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i've tried different modems and the phone works on a different network sim would that still cause it
Search the thread for a modem of your region and try a few till you get one to your liking. Takes a while for the phone to get 'used' to a new modem so even if it isn't the best at first, the signal tends to improve after about a day or so. I have never encountered problems with signal but I hope this helps
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Sent from my GT-I9100 using xda app-developers app
Varcolac said:
Search the thread for a modem of your region and try a few till you get one to your liking. Takes a while for the phone to get 'used' to a new modem so even if it isn't the best at first, the signal tends to improve after about a day or so. I have never encountered problems with signal but I hope this helps
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tried that mate.. i've got the KH3 modem on and it's apparently best for the UK and my network :/
thelor said:
Installed res remix two days ago it was working fine network coverage seemed fine... then I woke up and I had emergency calls only no signal... Tried re-flashing didn't help. Tried a stock rom and it still didn't work.. simcard works fine in friends phone, and a simcard on the network Three works fine in my phone :/ so i'm abit lost at what to do, I'm pretty new to all of this so please ignore my stupidity lol
Click to expand...
Click to collapse
I've used RR. I did however experienced this but I waited for almost 30 mins before I got my signal back.
thelor said:
tried that mate.. i've got the KH3 modem on and it's apparently best for the UK and my network :/
Click to expand...
Click to collapse
You could try xxlpq/s/x.
natsn horsley
theunderling said:
You could try xxlpq/s/x.
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Click to collapse
Tried them mate... at the moment the phone is working fine.... with THREE network but means i can't use my old sim which was just topped up
Hey Guys,
Have a rooted & unlocked GS3 I9300, running stock firmware.
When I first got it (Christmas) it worked perfectly. But after a few hours, I was unable to make calls (not registered on network error appears), go online or send/receive sms. I can now sporadically send and receive SMS, but it seems to be completely at random as to when I can do it.
When I turn the phone on and put in my pin, an error comes up saying I have entered my pin incorrectly, but my attempts left do not go down. 99% of the time, I have absolutely no service and occasionally, I have one bar.
I have checked and the IMEI code is still there and matching. Have tried numerous sim cards and none of them work.
Could anyone help me? At my wits' end!
Go to stock recovery and wipe data.
If it doesn't work flash a stock rom with Odin.
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kofiaa said:
Go to stock recovery and wipe data.
If it doesn't work flash a stock rom with Odin.
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Tried that but made no difference!
Managed to get a full signal earlier, but it dropped a few minutes after. Could it be a hardware problem?
cross_strike said:
Tried that but made no difference!
Managed to get a full signal earlier, but it dropped a few minutes after. Could it be a hardware problem?
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Go to your network settings under mobile networks, and do a manual selection of your network. Also try both gsm and hspda modes separately.
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No sims work then after following above instructions and no better i would return as faulty .
jje
kofiaa said:
Go to your network settings under mobile networks, and do a manual selection of your network. Also try both gsm and hspda modes separately.
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Tried changing between modes but none of them seem to make a difference!
When I try to scan for networks, it say "Error while scanning for networks".
Should I just give it up for lost at this stage?
cross_strike said:
Tried changing between modes but none of them seem to make a difference!
When I try to scan for networks, it say "Error while scanning for networks".
Should I just give it up for lost at this stage?
Click to expand...
Click to collapse
Take JJE's advice, time to return the phone.
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Anyone know why my s5 loosing data connection random, I have to either turn on airplane mode on and off are restart phone for it to connect back
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Nah that don't happen to me at all. Are you running a custom Rom?
TheArtiszan said:
Nah that don't happen to me at all. Are you running a custom Rom?
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Yes alliance
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I get the problem occasionally too but fixes when I do a hotboot
I've been having the same problem for the past week. Just started out of no where. Sometimes a reboot doesn't fix ot. Completely stock here.
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So it might be a tmobile thing then i guess
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A matter of fact some s5 do it and some don't
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Yes I get this several times a day (10+ times). I've found that either going in and out of airplane mode, or more easily, attempting to place a call (doesn't matter if it connects, I usually just call my voicemail and hang up immediately) fixes it. I had this issue much less frequently with the GS4 and I had a previous GS5 that I turned in on warranty for an unrelated microphone issue which had the same problem. I live in a big city if that matters at all as it's possible it's a network issue (I often go into buildings/elevators where there is no service which sometimes seems to cause it when the phone tries to reconnect to the network).
I've found that a little bit of tape helps keep my data from being loose.
github said:
I've found that a little bit of tape helps keep my data from being loose.
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Click to collapse
What u me tape?
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mrimage said:
Anyone know why my s5 loosing data connection random, I have to either turn on airplane mode on and off are restart phone for it to connect back
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Hard to say since you gave us no details about your phone configuration. What is your OS version? One of the bugs that the 4.4.3 update is purported to address is frequent data connection dropouts. Sound familiar?
.
fffft said:
Hard to say since you gave us no details about your phone configuration. What is your OS version? One of the bugs that the 4.4.3 update is purported to address is frequent data connection dropouts. Sound familiar?
.
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Click to collapse
Yes sound familiar, it happens on stock are beans rom
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And you still didn't tell us your OS version or other useful details that would enable us to help..
also did u tried to update the NF6 version yet?
I am running beans nf6 rom and modem
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It happens to me on the stock nf6 rom too
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Ive had at least 7 different phones and numerous tmobile customers complain of this. From whatbi understand its cause there doing major network upgrades
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I figured it was because of network upgrades. I just got VOLTE in my area so that could explain it.
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