Develop Bugs

1.93 ROM cant find any network

I recently updated my ROM to 1.93 with Radio .05 and now my phone is not finding any service, it just has the ! mark on top. I went into connection settings and used both manual and auto settings and it cant find my t mobile network. I am using T mobile in the US and was wondering if any of you had any suggestions. Thanks for your help

Kutthoat5150 said:
I recently updated my ROM to 1.93 with Radio .05 and now my phone is not finding any service, it just has the ! mark on top. I went into connection settings and used both manual and auto settings and it cant find my t mobile network. I am using T mobile in the US and was wondering if any of you had any suggestions. Thanks for your help
Click to expand...
Click to collapse
hi,
did u find other providers or is the list completely empty ?

try the following 3 points of success
1)just try whether you can make a emergency call
2)hold your diamond to a speaker in your near and listen whether there is a strange noise(turn on the speaker loud)
3) if you had another pda try the sim in the device
post the results....

TomDaDj said:
try the following 3 points of success
1)just try whether you can make a emergency call
2)hold your diamond to a speaker in your near and listen whether there is a strange noise(turn on the speaker loud)
3) if you had another pda try the sim in the device
post the results....
Click to expand...
Click to collapse
thanks for the reply bro
in my area, t mobile and AT&T show up as networks but my phone will just not connect to them, its just says "searching" and stays that way
1) is 911 the only emergency call you can make cuz i really dont wanna get in trouble with the law you know haha
2) i do hear a strange noise when i turn the volume up
3) i put my sim in my old n95 and it works just fine
its like my diamond is not even detecting my SIM card, i put my friends AT&T SIM in it and it doesnt detect that either

Kutthoat5150 said:
thanks for the reply bro
in my area, t mobile and AT&T show up as networks but my phone will just not connect to them, its just says "searching" and stays that way
1) is 911 the only emergency call you can make cuz i really dont wanna get in trouble with the law you know haha
2) i do hear a strange noise when i turn the volume up
3) i put my sim in my old n95 and it works just fine
its like my diamond is not even detecting my SIM card, i put my friends AT&T SIM in it and it doesnt detect that either
Click to expand...
Click to collapse
just read this http://forum.xda-developers.com/showthread.php?t=434950
i've also got such a strange problem but now all works fine...
and btw at this crazy time i put my sim in a old nokia 3310 and he found
a network immediately then i put it back in 3 different pda's (all of them are working up to 100 percent) and all 3 devices found NO network...
at this time iam also going really crazy and desperate
i dont know the reason for my success, i just let the simcard over the night in a other pda and on the next morning magicaly all works fine...
can u choose between gsm and wcdma?

just do this
select the automatic provider pickup and the wait over 10 minutes...
when he found a network after a long waiting time try connect to gprs.
if gsm will work and you can call someone and gprs will not works simultaniously u know you have the same fun like me

TomDaDj said:
just read this http://forum.xda-developers.com/showthread.php?t=434950
i've also got such a strange problem but now all works fine...
and btw at this crazy time i put my sim in a old nokia 3310 and he found
a network immediately then i put it back in 3 different pda's (all of them are working up to 100 percent) and all 3 devices found NO network...
at this time iam also going really crazy and desperate
i dont know the reason for my success, i just let the simcard over the night in a other pda and on the next morning magicaly all works fine...
can u choose between gsm and wcdma?
Click to expand...
Click to collapse
Okay ill take a look at that, and yes I can choose between Auto, GSM, and WCDMA. I usually leave it on auto, but even when I switch to GSM it does not pick anything up.

TomDaDj said:
just do this
select the automatic provider pickup and the wait over 10 minutes...
when he found a network after a long waiting time try connect to gprs.
if gsm will work and you can call someone and gprs will not works simultaniously u know you have the same fun like me
Click to expand...
Click to collapse
holy potatoes i dont know what i just did but it worked!!! i put the SIM in my old N95 and it found the t mobile network. i sent some messages, made some phones calls, then put the SIM back in my diamond and it found the network!! wow thanks a bunch for your help bro, i cant thank you enough

okay scratch that it worked for a little bit, until I started installing some apps and had to restart my phone, now it cant find a network again when it booted back up. Is it the apps that im installing that might be causing this?

no man i dont think so...
i think that was a mistake by the sim or by tmobile self (i think if they have any problems, they didnt say anything to their costumers )
if you have the possibility to go a little bit away from your home, for example into downtown then do this and test if u get there a signal.
i live in vienna - austria. vienna has 23 districts - when i had this terrible problem - at least in 7 disctricts i became immediately a signal and in my own district i became to no time a gsm signal (or more accurately described - i became a gsm sigal after 5-10 minutes waiting time (every time i turn off and turn on the phone, always i had to wait about 5-10 minutes) then i could make calls but no internet connection was possible. but in the other 7 disctricts where ive been, all works fine
crazy or not crazy

TomDaDj said:
no man i dont think so...
i think that was a mistake by the sim or by tmobile self (i think if they have any problems, they didnt say anything to their costumers )
if you have the possibility to go a little bit away from your home, for example into downtown then do this and test if u get there a signal.
i live in vienna - austria. vienna has 23 districts - when i had this terrible problem - at least in 7 disctricts i became immediately a signal and in my own district i became to no time a gsm signal (or more accurately described - i became a gsm sigal after 5-10 minutes waiting time (every time i turn off and turn on the phone, always i had to wait about 5-10 minutes) then i could make calls but no internet connection was possible. but in the other 7 disctricts where ive been, all works fine
crazy or not crazy
Click to expand...
Click to collapse
thanks for the help man your awesome, i really appreciate it. but i think ive finally found the issue, when i restarted the phone it couldnt locate any network. but then i started to charge it and boom!! it found it again! so does the battery need to be near full for it to locate a signal? haha wow, craziest phone ive ever had!

Kutthoat5150 said:
thanks for the help man your awesome, i really appreciate it. but i think ive finally found the issue, when i restarted the phone it couldnt locate any network. but then i started to charge it and boom!! it found it again! so does the battery need to be near full for it to locate a signal? haha wow, craziest phone ive ever had!
Click to expand...
Click to collapse
thx - i do what i can
but i dont think that the problem is gone - you will see - it wont work long. i signal must be there - it should does make no matter whether the battery is - not load - half load or full loaded. it must always work! at 1% of battery it works on my device - it is impossible that that is the problem of you. go to the next tmobile store and let change your sim card - or make it like me - just wait 4 days - hope tmobile have fixed their problems - and be happy if it works.
otherwise it was a hardware issue and you have to send it back to tmobile for repair. but if you do this you must restore the stock software... otherwise you lose your guaranty!!

TomDaDj said:
thx - i do what i can
but i dont think that the problem is gone - you will see - it wont work long. i signal must be there - it should does make no matter whether the battery is - not load - half load or full loaded. it must always work! at 1% of battery it works on my device - it is impossible that that is the problem of you. go to the next tmobile store and let change your sim card - or make it like me - just wait 4 days - hope tmobile have fixed their problems - and be happy if it works.
otherwise it was a hardware issue and you have to send it back to tmobile for repair. but if you do this you must restore the stock software... otherwise you lose your guaranty!!
Click to expand...
Click to collapse
oh i forgot to say in the first post that my diamond is unlocked, im just using t mobile as my carrier on it but my phone is not locked to any network. so im not sure if its t mobiles fault but just my phone. My SIM card worked fine right away when i put it in my N95 8GB, but my diamond did not pick it up right away when i put it in. I had to plug in my charger first then a few seconds later it found a signal. Not sure why it did that, maybe just needed a little boost to grab that signal or something. Could it be the ROM or Radio I am using?

Kutthoat5150 said:
oh i forgot to say in the first post that my diamond is unlocked, im just using t mobile as my carrier on it but my phone is not locked to any network. so im not sure if its t mobiles fault but just my phone. My SIM card worked fine right away when i put it in my N95 8GB, but my diamond did not pick it up right away when i put it in. I had to plug in my charger first then a few seconds later it found a signal. Not sure why it did that, maybe just needed a little boost to grab that signal or something. Could it be the ROM or Radio I am using?
Click to expand...
Click to collapse
ok, then send it back to htc, or bring it to the store back where you bought it.
but do this only if you really see no more chance to fix it...
remember what i write, i try my sim in a nokia 3310 and it works, a few seconds later in diamond and 2 other pda's i got no network - back in nokia and it works i dont know how this could be possible!!!
i also try 5 different roms and all radios that exists too - and with all was the same - just nothing.
its your choice my friend - be patient and hope for better times or send it back to repair. but then also upload the original htc rom, radio and spl
i go now sleep - at vienna its 23 o'clock iam verrrrrrry tired from a hard working day...
but post further results, i read it tomorrow...

TomDaDj said:
ok, then send it back to htc, or bring it to the store back where you bought it.
but do this only if you really see no more chance to fix it...
remember what i write, i try my sim in a nokia 3310 and it works, a few seconds later in diamond and 2 other pda's i got no network - back in nokia and it works i dont know how this could be possible!!!
i also try 5 different roms and all radios that exists too - and with all was the same - just nothing.
its your choice my friend - be patient and hope for better times or send it back to repair. but then also upload the original htc rom, radio and spl
i go now sleep - at vienna its 23 o'clock iam verrrrrrry tired from a hard working day...
but post further results, i read it tomorrow...
Click to expand...
Click to collapse
thanks so much for your help bro, ya every time i unplug it from my charger it loses its signal, so i have to keep it charged just to talk on it or text. so i think i am going to have to send it back to htc for repair as i dont really know what is going on with it. thanks again man, really appreciate the help

same here
i have a very similar problem.
i can only make and receive calls on the wcdma network, but not on gsm.
in both, it says that i have reception, but when i try to make a call it just goes silent and after a while the call is ended.
if i dial *102# which is the number to access your mobile credit status, on wcdma it opens a little bubble coming from the network icon and says the correct values, on gsm it simply waits and says connection interrupted.
i have tried several roms and radios, and the problem persists...
you can view my current setup in my signature.
any ideas, what could be the problem? is it the hardware? does this have to do something with hungary?
the sim works just fine, since 1997 (i have no idea how can 3g work on this little baby, but it does) =D
any help appreciated! tx

sampi604 said:
i have a very similar problem.
i can only make and receive calls on the wcdma network, but not on gsm.
in both, it says that i have reception, but when i try to make a call it just goes silent and after a while the call is ended.
if i dial *102# which is the number to access your mobile credit status, on wcdma it opens a little bubble coming from the network icon and says the correct values, on gsm it simply waits and says connection interrupted.
i have tried several roms and radios, and the problem persists...
you can view my current setup in my signature.
any ideas, what could be the problem? is it the hardware? does this have to do something with hungary?
the sim works just fine, since 1997 (i have no idea how can 3g work on this little baby, but it does) =D
any help appreciated! tx
Click to expand...
Click to collapse
hi,
i was really wondering why this strange problem happens now on more and more users... thats really interessting....
did you try the sim in a other phone?
if it there also not work -> go to a store from your provider and told them that u have a old sim card which not works with your current phone.
normaly they should give you immediately a free new sim card.
and please tell me whether you have tmobile as your provider.
just for info because you write, that u can use 3g.... when i recieved my diamond i also had an old sim card which doesnt support UMTS or 3G but HSDPA was working, that cause because the sim is not responsible for this communication mode - only your phone!

the problem the guy has in this thread is almost exactly what i am experiencing right now
http://forum.xda-developers.com/showthread.php?t=409733&highlight=network+problem
except mine used to just keep restarting an wouldnt boot up so i just let it do that for about 10 min and it eventually loaded up. Is there a specific number I can dial that will reset my SIM card settings or something? My phone has been like this for a couple days now and it sucks not being able to call or text anybody.
I thought I solved this problem when I plugged in my charger to my phone, then it started finding the EDGE network but my signal was still being dropped when I made calls, only some text would go through and thats it. Please guys, somebody save me from this misery!

Kutthoat5150 said:
the problem the guy has in this thread is almost exactly what i am experiencing right now
http://forum.xda-developers.com/showthread.php?t=409733&highlight=network+problem
except mine used to just keep restarting an wouldnt boot up so i just let it do that for about 10 min and it eventually loaded up. Is there a specific number I can dial that will reset my SIM card settings or something? My phone has been like this for a couple days now and it sucks not being able to call or text anybody.
I thought I solved this problem when I plugged in my charger to my phone, then it started finding the EDGE network but my signal was still being dropped when I made calls, only some text would go through and thats it. Please guys, somebody save me from this misery!
Click to expand...
Click to collapse
to 100% the same what i've gotten and to 99% the same problem which you have.
BUT its very interessting, all guys what had this problem use t-mobile as the provider.... very strange.....
BTW because in the thread http://forum.xda-developers.com/showthread.php?t=409733&highlight=network+problem
the guy postet
Intradvocate said:
Okay, nope not fixed... Flashed it with 1.37, connected to the network for a few seconds, dialed somebody and no ring or anything, but when i called my phone i could hear my own voice. So I guess i have to send it in for repair. Damn.
Click to expand...
Click to collapse
at this bad time i also restore to stock rom 1.37 and he found in 1 second a signal BUT then it was also impossible to make an internet connection...

ya i was starting to think it was tmobiles problem until I put my friends AT&T SIM in and it was doing the same thing. It would just say "searching" and thats it, and well I just charged up my phone to almost full battery and it located a signal again. But it still drops calls almost immediately and I can only send text. Does the 1.93 ROM do anything to the Radio or antenna because it has been like this even when I flash back to earlier ROMS and radios. I am almost sure that flashing or changing radios will not solve the problem because I have done that countless times already.

[Q] suddenly can't see any mobile networks - Baseband "unknown"

SYMPTOM: can't see any mobile networks
BACKGROUND: I've been using htc one x for a month now. Initially on three, but their signal was unusable at home, so sim-unlocked and switched a couple of weeks ago to giffgaff ( a virtual network on top of the UK o2 network).
All has been fine, until today. I sent a few texts & calls in the morning, and mobile data was working. Since then, I can't see any mobile network.
wifi is fine.
Search Networks pops up "Error while searching for networks" and finds none.
No software changes of any sort since last successful call. No changes at all today, at least until I tried to diagnose the problem.
Running stock rom, with the WW update of a couple of weeks ago (1.28.771.9.CL56522 release-keys) -- neither S-OFF nor unlocked bootloader.
Nothing obvious to me in the normal or radio logcat logs.
The only thing I did after the last successful call was to run sensorly to try and map a trip. I've used this before without any problems. It got no connection but I thought nothing of that. I've since uninstalled it just in case it could somehow be interfering with the radio.
THINGS I'VE TRIED:
No, the airplane mode isn't on, and mobile is. I've toggled airplane from settings and power switch, many times
recreated the APN
checked other phones - yes there are a number of networks visible
tried the original o2 sim - same problem
safe mode
cold boot
reboot, reboot, reboot
obviously I haven't pulled the battery...
turned off wifi, in case it was somehow interfering
HTC diagnostic tool
factory reset
confirmed imei is not blocked
Any ideas? Bearing in mind that I'm looking for something which can happen spontaneously.
Interestingly, while writing this I've just noticed that Baseband version shows as Unknown. That worries me - is it possible that my radio partition has spontaneously corrupted itself?
I did speak to 02 support - they said to take it into a shop for warranty repair. I don't want to try a custom ROM just yet -- not when I might have to use the warranty. But is there any way to force it to reinstall the stock rom (preferably not involving windows)?

I have the same problem as well and flashing custom roms did not solve it for me. But for me even the IMEI number is shown as UNKNOWN...I haven't done anything special to get this issue, one day when I woke up the phone could not connect to any network.
I have tried a lot of different methods but with no success. I don't think we can do anything about the baseband without S-OFF.

If a hard reset fails, then it's time to think about returning the unit. Either get a refund or get it replaced.

This may be irrelevant; but I've had this happen to me on my GNexus. I solved it by going back to stock and it just fixed itself overnight.....

my HTC One X did the same after about 2 weeks. Gave it back to supplier, waiting my replacement.
Even tested with a different SIM card, did a hard reset. Problem stayed the same.

Im curious did any of you find a resolution to this? it happened to me a while ago but yet to fing a solution. HTC refuse to fix under warranty because it is unlocked.. i am currently waiting for the next official update to see if that fixes anything but the way things are looking that could be a while..

Hi
stout0_0 said:
Im curious did any of you find a resolution to this? it happened to me a while ago but yet to fing a solution. HTC refuse to fix under warranty because it is unlocked.. i am currently waiting for the next official update to see if that fixes anything but the way things are looking that could be a while..
Click to expand...
Click to collapse
It sounds like a fault, probably the radio chip has just stopped working, no software is going to repair that. If it was a software problem, there would be hundreds or thousands of people all having the same issue.
Regards
Phil

Invalid/missing Sim card

I have a T-mobile G3 (obviously) that I've had for about a year and recently it has been saying that the sim is either invalid or not installed. This is the same sim card I have been using for a while. Occasionally after several restarts and removals/re-inserts I can get it to work for a bit but then it will to back to invalid sim. Does anyone have any suggestions of what the problem might be or how to fix it? I get both the invalid sim and sim not installed messages.

Is a SIM card from a different carrier installed? Have you tried a new SIM, performed a factory reset, or possibly shimmed the card so it fits tighter in the slot?

Nope. T-mobile sim card and a T-mobile phone...all my previous phones I have rooted or at least unlocked or something. I have done absolutely nothing to modify this one from stock.
redduc900 said:
Is a SIM card from a different carrier installed? Have you tried a new SIM, performed a factory reset, or possibly shimmed the card so it fits tighter in the slot?
Click to expand...
Click to collapse

did you figured out the problem? It just started happening to me.. super annoying...

Nothing that I tried worked. Ended up deciding it was a hardware issue that wasn't worth trying to fix.... I was thinking of replacing the Sim tray but that's close to impossible on that phone. Ended up just trading it in for a G4

schneiderm3709 said:
Nothing that I tried worked. Ended up deciding it was a hardware issue that wasn't worth trying to fix.... I was thinking of replacing the Sim tray but that's close to impossible on that phone. Ended up just trading it in for a G4
Click to expand...
Click to collapse
Old topic but the same thing started happening to me this week. At first, it wouldn't happen till I would reboot the phone and it was pop up with the no SIM card symbol and subsequent reboots wouldn't clear it.
EDIT: Tmo D851 with same Tmo SIM card since purchase, on Tmo network this whole time.
Surprisingly, flashing an old backup img would fix the issue for a day or two and upon another reboot, it would be back.
Now this morning, phone was sluggish and locking up, rebooted it and the dreaded symbol was back and no matter which backup img I used, it wouldn't clear. I had thought it was one of the app permissions I had blocked (though none were system apps) and reset all permissions, cleared all caches, thinking it was a software issue. Still wouldn't clear.
I even went so far as to do a complete factory restore via the LG flash tool, right back to out-of-the-box-new, and STILL the no SIM card error was there. Tried rooting and flashing another backup, still there. Add in numerous rinse and repeats of various steps and still there.
Went to T-Mobile and they swapped for a new SIM card and it was still popping up. They did the normal, factory restore from the settings menu, still there.
I was starting to think Tmo was blocking my account due to my data usage (paranoid, I know...) and asked if my account was being blocked or my number and was told nothing listed or said.
Of course, the 1-yr warranty on this phone just ended in September and I'm high and dry with getting this fixed.
Also of note, none of the pins are broken, misshaped, flat or other. I even tried placing a business card piece on top of the SIM card to try and see if it wasn't making contact, still no joy.
The SIM card does work in one of my old Tmo phones, so it's not the account.
Just sucks that this phone is now crippled from such a silly mechanism as such, first time with an error/problem like this with SIM card phones. And I kept this phone in pristine condition, no drops, water, glass protector, etc. And it has never been dropped or other, just started up as such... My wife has the same exact phone and no problems with her's. Yet.
schneiderm3709, did you trade it in at a Tmo store? They took it with the SIM card error or you didn't mention it? Did they take it with the SIM card error at a reduced value? If either, what did you get for it?
Thanks.

Yeah, I determined that it wasn't the sim card either. I'd have no problem putting my sim in another phone, and another sim in my phone would have the same issues.. All the flashing and everything did nothing for me. I also tried a piece of paper on top of the sim card when I slid it in to help it make better contact. This worked for a little while but eventually didn't do anything. My hypothesis is that one of the pins was going bad/had a crack, and when the sim card was installed it would lose contact, and when you took it out it would pop back up to where it's supposed to be, so you couldn't see the problem without microscopic inspection.
I told T-mobile exactly what was happening with mine, and they tried all the same things they tried with you, also still to no avail. Their requirements for trade in are very simple actually, 1: NO Water Damage, 2: NO Screen Damage (General wear scratches are okay), and 3: The device turns on. Mine did all of this, just wouldn't connect to the network. They gave me $100 credit towards the new G4. I Love it and don't know if I'd ever be able to leave LG world....Unless maybe the droid turbo somehow comes over to T-Mobile. I don't know if that trade in value has changed now since the LG V10 came out or not. Hope this helps. Let me know if you have any other questions.
JustLok said:
Old topic but the same thing started happening to me this week. At first, it wouldn't happen till I would reboot the phone and it was pop up with the no SIM card symbol and subsequent reboots wouldn't clear it.
EDIT: Tmo D851 with same Tmo SIM card since purchase, on Tmo network this whole time.
Surprisingly, flashing an old backup img would fix the issue for a day or two and upon another reboot, it would be back.
Now this morning, phone was sluggish and locking up, rebooted it and the dreaded symbol was back and no matter which backup img I used, it wouldn't clear. I had thought it was one of the app permissions I had blocked (though none were system apps) and reset all permissions, cleared all caches, thinking it was a software issue. Still wouldn't clear.
I even went so far as to do a complete factory restore via the LG flash tool, right back to out-of-the-box-new, and STILL the no SIM card error was there. Tried rooting and flashing another backup, still there. Add in numerous rinse and repeats of various steps and still there.
Went to T-Mobile and they swapped for a new SIM card and it was still popping up. They did the normal, factory restore from the settings menu, still there.
I was starting to think Tmo was blocking my account due to my data usage (paranoid, I know...) and asked if my account was being blocked or my number and was told nothing listed or said.
Of course, the 1-yr warranty on this phone just ended in September and I'm high and dry with getting this fixed.
Also of note, none of the pins are broken, misshaped, flat or other. I even tried placing a business card piece on top of the SIM card to try and see if it wasn't making contact, still no joy.
The SIM card does work in one of my old Tmo phones, so it's not the account.
Just sucks that this phone is now crippled from such a silly mechanism as such, first time with an error/problem like this with SIM card phones. And I kept this phone in pristine condition, no drops, water, glass protector, etc. And it has never been dropped or other, just started up as such... My wife has the same exact phone and no problems with her's. Yet.
schneiderm3709, did you trade it in at a Tmo store? They took it with the SIM card error or you didn't mention it? Did they take it with the SIM card error at a reduced value? If either, what did you get for it?
Thanks.
Click to expand...
Click to collapse

Same thing started happening to me. I am not sure if I should replace it. Any suggestions?

Maaz20 said:
Same thing started happening to me. I am not sure if I should replace it. Any suggestions?
Click to expand...
Click to collapse
I have the same problem too! Really frustrating, I've tried everything and I cannot pinpoint the problem.

I found the following solution by stevenpurwadipura on Reddit
Guys, i found a fix for this. I just figured out this trick, so i don't know if this is a real fix or just a luck. Go to settings - apps - choose option - configure apps - modify system settings - choose option - show system - select NETWORK - change it into 'No'. Then restart your phone.
I restart my phone and it detects my SIM again. But as I said, I'm not too sure if this is really a fix or just a luck.
Click to expand...
Click to collapse
It's currently working a treat for me!

Invalid Sim Card error in LG G3 tmobile
Hi.. I'm getting the invalid sim card error after restarting my Lg g3. The sim card works fine on my husbands phone.. so guess its same issue as yours. Did you have a valid warranty when you got the 100$ credit from Tmobile for Lg G4?
schneiderm3709 said:
Yeah, I determined that it wasn't the sim card either. I'd have no problem putting my sim in another phone, and another sim in my phone would have the same issues.. All the flashing and everything did nothing for me. I also tried a piece of paper on top of the sim card when I slid it in to help it make better contact. This worked for a little while but eventually didn't do anything. My hypothesis is that one of the pins was going bad/had a crack, and when the sim card was installed it would lose contact, and when you took it out it would pop back up to where it's supposed to be, so you couldn't see the problem without microscopic inspection.
I told T-mobile exactly what was happening with mine, and they tried all the same things they tried with you, also still to no avail. Their requirements for trade in are very simple actually, 1: NO Water Damage, 2: NO Screen Damage (General wear scratches are okay), and 3: The device turns on. Mine did all of this, just wouldn't connect to the network. They gave me $100 credit towards the new G4. I Love it and don't know if I'd ever be able to leave LG world....Unless maybe the droid turbo somehow comes over to T-Mobile. I don't know if that trade in value has changed now since the LG V10 came out or not. Hope this helps. Let me know if you have any other questions.
Click to expand...
Click to collapse

Invalid Sim
I too have the same problem for sim 2 in my LG G3 D858HK. Factory data resetting did not solved the problem. I do not know what is the reason, But now i could solve it by resetting network settings. Software version - Android 6, D858HK 30b, In back up and restore there is an option to reset network settings. Done this for sim 1 and sim 2. Problem solved.

i am having this invalid sim problem after upgrade to 30e;
I found a fix for this. i don't know if this is a real fix but just flipping from yes to no and vice versa followed by reboot seems to work consistently.
i copied it. credit should go to the original poster
Go to settings - apps - choose option - configure apps - modify system settings - choose option - show system - select NETWORK - change it into 'No' or vice versa (from no to yes). Then restart your phone.
Click to expand...
Click to collapse
Never again will I ever buy an LG phone. burnt thrice now ( Nexus 4, 5 and now this damn G3)

Problem solved.today i recived a lg D851 with same problem,i checked every thing was fine in phone setting,software version was installed 6.0.so i just flashed it with V10c version after flash i have no error and have good network. sorry for my bad english.hit thanks if its helpful for you.:angel::angel:

Nomi1987 said:
Problem solved.today i recived a lg D851 with same problem,i checked every thing was fine in phone setting,software version was installed 6.0.so i just flashed it with V10c version after flash i have no error and have good network. sorry for my bad english.hit thanks if its helpful for you.:angel::angel:
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Click to collapse
Hey, you have a link to V10c? Going to try to flash before giving up. Thanks

I found the solution go to settings > Network > More > Mobile Network > System Select > Network Mode > Global

It worked!!!
I experienced the same problem and tried most of what was suggested. Finally the following steps posted by Ayebale fixed the problem .
Ayebale said:
found the solution go to settings > Network > More > Mobile Network > System Select > Network Mode > Global
!
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Click to collapse

Same thing happening to me. I took it to a t-mobile store and they said the network upgraded and some phones are now obsolete because of it. Also, because they don't have contracts anymore, I cant get any deals on a new phone even though they didn't warn me that my phone would stop working.

Hello everyone,
First of all thanks to all who had solutions. All worked temporarily. I have a stock TMO D851 30G with the stock MM 6.0 TMO ROM. It has worked awesome for the past three years I have had it. I have it unlocked via IMEI and no root....yet. I started having this issue about a 4 months ago. I sent the phone to LG and the "techs" there checked the phone and found no issues. Still having the same issue. However, I found that if I restart in safe mode it acknowledges the SIM and works fine. Use it in safe for about 30 minutes and restart. I get my network back. I am stuck. I figure there is something in the firmware or ROM that is causing a conflict. Any ideas???? I am completely fed up and out of ideas
Sent from my LGE LG-D851 using XDA Labs

Update to this problem. It is actually a hardware issue. However it does not have to do with the sim Tray at all. It is due to a bad connection on the processor. Took mine to a repair shop here in my town in mexico. He did a reball on it (flux and reheat of the processor) this was two weeks ago and it has completely fixed the issue. Hope this helps the group out. Thanking all of you that threw in your two cents. It was all helpful

OTA update and factory reset - Lost mobile connection! HELP!

Hi all,
having had the malware come through in the recent OTA update, I decided to do a factory reset to get all my data off quickly before any of it went to someone it shouldn't. Before the OTA the phone was working perfectly!
Unfortunately, after that, I have not been able to get connected to 3 Mobile (UK) although it worked before. I get the "Can't connect to this network right now. Try again later." message.
I've flashed a variety of ROMS, from old stock, to new stock, to Eragon.....none of which allow me to get on my network.
Wifi works fine.
The IMEI did disappear, but I was able to follow instructions online and manually reinsert them successfully.
I wonder if I have somehow knocked out the RF frequencies as I did not know I needed to make a backup of these.
ANY help you can give me to rescue what is a pretty decent phone (let down by Elephone's software!) would be great.
Thanks!

I have never had this problem thankfully so I am not sure what you should do but the video in the link below may help?
https://www.youtube.com/watch?v=qnJr7RQa2Kk

Some progress - oddly enough I tried restoring the IMEI numbers to the opposite SIM sockets and now the RADIO setting declares that it is on.
I think this is because it is a very early version of the phone and perhaps the SIM labelling was the wrong way round. Who knows.
I've attached some screenshots of what seems to be going on right now. Any ideas? Anyone?

I can get the phone to connect to 4g, but it will not connect to 3g/2g.
What do I do now?

Cooperuk said:
I can get the phone to connect to 4g, but it will not connect to 3g/2g.
What do I do now?
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Glad you have managed to sort of sort it. For 3g have you selected that in mobile data settings?

It was a hardware issue - opened the phone up and the antenna connector had come away from the motherboard. Must have happened when in my missus' handbag (her phone - not mine!).
All solved now.
Might be worth others checking their antenna if having the same issues. Under the plastic cover is a little rubber 'knob' which puts pressure on the connection. I don't think the back was screwed down hard enough to keep the correct pressure on the connector.

More than once an hour 'no signal' and back button acting up?

Hi, I've problems with my device I bought online. Mainly the cellular signal keeps dropping to 0 rendering the service to be unusable. I wanted to make a thread to know if we could fix this ourselves because I didn't want to send this back to the store.
Here's the list of failures I've tried:
1. Tried to insert my sim to either slots
2. Inserted another sim card
3. Inserted both sim card and tried to swap it's slots
4. Deactivated Volte
5. Tinkered with cellular data APNs. (Mainly copied the settings from my other phone)
5. Restored factory settings
6. Repeated these steps after restoring factory settings
Also, Whenever I'm browsing media and whatnot, the back button seems to trigger itself. (once or twice every 20 minutes while watching a video).
Miui 9.0.2.0 (Philippines, Globe sim card [Other networks have the same problem])
I haven't unlocked bootloader, rooted or installed custom roms because I didn't want to void warranty and waste my time and money.
I'm hoping we could fix these problems ourselves. Any thoughts of what I should do? Should I just return this?

my "no signal" story: after 3 weeks my new mi6 got no signal anymore. i read many topics on xda, and thought it might be a software issue. although i decided to head to my mobile provider and asked for help. i got a new nfc simcard which solved the problem till now. it seems there are some issues with old european simcards on new chinese mobiles. the simcard just crashes and you loose signal.

bendep said:
my "no signal" story: after 3 weeks my new mi6 got no signal anymore. i read many topics on xda, and thought it might be a software issue. although i decided to head to my mobile provider and asked for help. i got a new nfc simcard which solved the problem till now. it seems there are some issues with old european simcards on new chinese mobiles. the simcard just crashes and you loose signal.
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Click to collapse
Thanks for the reply, I'm gonna have to try and change my sim. The back button is probably a defect. It's getting worse.