Hey there,
I'll try to be as specific as I can about this... So basically, I have the i747 through AT&T but am currently out of the country (in Japan) for a couple months and am using a prepaid data only SIM. Phone is unlocked and data works fine on stock, but I've tried flashing for the first time since leaving the US (with BeanStalk 4.3, MIUI, and LiquidSmooth using first CWM, then TWRP) so I'm guessing this isn't a particular ROM issue.
I'm unable to connect to the Japanese Docomo network when I flash. The phone recognizes the network, IMEI is still intact, but the APN is gone (so I tried APN backup/restore to get the option back, but still no data). Then I reflashed most of the i747u modems, also to no avail.
Also got out my AT&T SIM, which still works on stock. APN shows up, but no voice/data.
Anyone have an idea of what the problem could be? Any other options I missed? As a disclaimer, I don't really have experience beyond clearly written directions posted here, but I read a lot before I try anything and have been flashing my last couple phones with good success.
Thanks so so much to anyone who reads
Hi there,
I've got an HTC One M8, on the T-Mobile Network. I recently unlocked and rooted my phone. I downloaded the Paranoid Android beta ROM and installed it along with gapps. All went smoothly and booted up fine. However, I noticed my phone wasn't connecting to LTE. All I could do was make phone calls. I tried flashing the ROM again, same issue. I then tried the Cyanogenmod ROM and also had the same issue, so I finally restored my phone's nandroid backup so I'm all good again.
But I'm curious what the issue might be. I also tried taking out and putting back in my SIM card etc. Is there something I'm missing that I need to do?
yannibmbr1 said:
Hi there,
I've got an HTC One M8, on the T-Mobile Network. I recently unlocked and rooted my phone. I downloaded the Paranoid Android beta ROM and installed it along with gapps. All went smoothly and booted up fine. However, I noticed my phone wasn't connecting to LTE. All I could do was make phone calls. I tried flashing the ROM again, same issue. I then tried the Cyanogenmod ROM and also had the same issue, so I finally restored my phone's nandroid backup so I'm all good again.
But I'm curious what the issue might be. I also tried taking out and putting back in my SIM card etc. Is there something I'm missing that I need to do?
Click to expand...
Click to collapse
OKay, I was able to resolve this issue on my own. I changed my APN setting to utilize IPv6 and it's been running just fine. Go figure.
Okay so i have the T-Mobile Galaxy s3. It has been rooted for a while with zero problems. I got tired of the older android on it and decided to install a rom. I installed Cyanogenmod 13.0-20151208-unofficial-d2tmo running android 6.0.1. When i first got it all booted and loaded with gapps, i noticed that it recognized my sim and that i had a signal but i couldn't use any LTE or just all around data. basically i couldn't go online (in case i just didn't explain that well enough. Phone service is a mystery to me). I did some searching online and found a lot of people saying that i needed to update my baseband. i found a baseband for my model (T999) and tried to flash it in TWRM. Once i rebooted, it said "No SIM card - No service." in the upper left-hand side. i have tried flashing multiple different basebands the same way with no luck. i tried backing up my EFS folder and the restoring it because someone said to do that and that just... just no... it didn't do anything. even Odin 3 said it was a "FAIL!". So here i am with this android equivalent to an Ipod and i hate this. Everything else in this ROM works perfectly aside from this but this is a super big problem. PLEASE HELP!!!! A phone isn't a phone if you cant even send a text.
Did you update the phone's bootloader and modem to the latest version before flashing CM?
What is done:
first I flash 30B bump, the problems starte. then flash 30B LGUp, flash 21a and 21c, change band in ingeneering menu, delete lteconfig, flash 30b bump with modems: 21a, 21c, 30b hybrid, change of operator, manual config APN, manual search network. All this does not help.
Any ideas?
no ideas?
Idem.
But after reboot 4G is ok, but again...every morning i lost signal 4G...only 2G/3G is ok. So..reboot & 4G is up......disappointed.
Same on my G3. I downgrade from MM to LP but problem persist.
Same here....tried rollback to kitkat stock, LP stock, CM12, Cm13, and some other roms with no luck....have just flashed stock LP for repair...
so today I tried swapping my SIM with my friend's
he is using G3 with stock 21A, and his SIM is of the same carrier as mine
after swapping, I found that my phone (and of course his phone, too) is working normally
my phone is normal even after swapping back
did some different tests like switching on and off with 3G, LTE etc., everything is normal, at least at this moment
Still working with you? So it is sim card fault? With me after searching networks everything seems to be ok, but I couldn't connect with LTE. Only sometimes successfull connection.(once a day and after reboot same...) Very strange. :/
I lost network signal randomly... i tried with 30b hybrid modem, 21a, 21c... kdz method, twrp bumped rom... and doesnt help me at all.. my network signal gets a rotating circle randomly... and in that time my phone is out of coverage... it is .... hundred times in a day... i dont know what to do, please help
same here when i use sucks 30b D855, but now everything is ok with me.
Steps that have been followed:
downgrade to lollipop 5.0
install CandySIX Rom , then try to connect to my carrier network , at the first time it not give me anything , but when i reboot my phone , LTE appears and everything fine
back to CloudyG3 2.5 then i found that the problem resolved
My phone now works well
OKAY, i found a solution to the problem and here is what i found :
Pacote-san said:
Same here...
Edited: Fixed this deletings the folder LTEconfigs on System/app
Had to then configure it to auto GSM/WCDMA then switch back to LTE auto
It connected at first with 3g then it went LTE and worked normally
Click to expand...
Click to collapse
i made it and not i have no drop in connection and i am sure that i will receive the next important call from my colleges.
I hope that this help you as it helped to me!
All the best!
goly1993 said:
Still working with you? So it is sim card fault? With me after searching networks everything seems to be ok, but I couldn't connect with LTE. Only sometimes successfull connection.(once a day and after reboot same...) Very strange. :/
Click to expand...
Click to collapse
Some people got their phones back to normal by flashing some roms (like CM, ACIP, stock, etc.), but that didn't work for mine
not sure if it was sim card fault, but my problem solved (at that time i was back to LP stock 20h) after swapping my sim cards with my friend's.
i am still using that sim card at this moment, working fine since last thursday
Same problem here, have signal drops on MM roms with LTE connection.
Tried all methods above, nothing really helps .. ;((
The signal is fine on LP roms, tho i installed N&N so i was able to change network type to GSM/WCDMA auto, having steady signal now, but missing LTE speed, trying to find solution to fix this, but unfortunately for now.
Same, my G3 doesn't recognize my sim sometimes or it just loses signal randomly, making the smartphone almost useless.
I tried CloudyG3 2.5 Lollipop, then upgrading to Marshmallow with many radios flashed (also the hybrid one) , then I tried to come back to a stock Lollipop ROM and the signal is always unstable. I'm going crazy due to that. I'm starting to lose hope too.
I think I've tried every possible solution to the connectivity problems I've read since flashing 30b.
Freezing LteConfigs gave me more stability, but didn't solve the problem completely. Tried editing the build.prop to force LTE as preferred network type, this didn't change anything. Don't even know how many times I've changed my apn settings.
Tried every combination of modems possible: 21a/c modem with 30b rpm/tz, pure 21a/c, pure brazilian 20c, brazilian 20c with 30b rpm/tz and nothing. Changed sims multiple times, didn't work.
The only way to get a reliable connection is to limit the phone to 3G... but that isn't a solution since I pay for unlimited 4G. If I let the phone in auto mode, the instant it tries to connect I lose all connectivity and it would take up to 2 minutes searching for the network.
I'll flash the stock rom today and if it doesn't work I can safely say it should be a hardware problem.
soulstaker said:
I think I've tried every possible solution to the connectivity problems I've read since flashing 30b.
Freezing LteConfigs gave me more stability, but didn't solve the problem completely. Tried editing the build.prop to force LTE as preferred network type, this didn't change anything. Don't even know how many times I've changed my apn settings.
Tried every combination of modems possible: 21a/c modem with 30b rpm/tz, pure 21a/c, pure brazilian 20c, brazilian 20c with 30b rpm/tz and nothing. Changed sims multiple times, didn't work.
The only way to get a reliable connection is to limit the phone to 3G... but that isn't a solution since I pay for unlimited 4G. If I let the phone in auto mode, the instant it tries to connect I lose all connectivity and it would take up to 2 minutes searching for the network.
I'll flash the stock rom today and if it doesn't work I can safely say it should be a hardware problem.
Click to expand...
Click to collapse
I had exactly the same problems I tried all of the solutions mentioned modems/roms/etc but what solved it for me was flashing the Pure stock MM kdz now no signal drops or 4g problems.
tallman43 said:
I had exactly the same problems I tried all of the solutions mentioned modems/roms/etc but what solved it for me was flashing the Pure stock MM kdz now no signal drops or 4g problems.
Click to expand...
Click to collapse
Did you root after flashing the kdz? I'll try with pure 30B but having no root is almost as bad as no 4G.
soulstaker said:
Did you root after flashing the kdz? I'll try with pure 30B but having no root is almost as bad as no 4G.
Click to expand...
Click to collapse
No not rooted it yet, to be honest I don't like the kingroot app it looks way too suspicious to me + the rom is smooth and stable at the moment so I thought I would stick with stock for a while.
Sent from my LG-D855 using Tapatalk
You could take a look on this : http://forum.xda-developers.com/lg-g3/help/annoying-lg-g3-problem-lte-signal-solved-t3293721
This is my answer to this mass problem. Hope this help yo all you !
mccloud90 said:
You could take a look on this : http://forum.xda-developers.com/lg-g3/help/annoying-lg-g3-problem-lte-signal-solved-t3293721
This is my answer to this mass problem. Hope this help yo all you !
Click to expand...
Click to collapse
This worked for me after nothing else had. Thanks a lot!
Sent from my LG-D855 using Tapatalk
adamw said:
This worked for me after nothing else had. Thanks a lot!
Sent from my LG-D855 using Tapatalk
Click to expand...
Click to collapse
just say thanks into that thread and vote to be able to other members to be sure that this helps. I am so happy that this method helped you. HF
Hey guys,
i recently clean Updated from Fulmics 2.7 to latest 7.5. Everything worked fine until i suffered from Network completely droping while Wifi is active.
I tried different scenarios. The Bug is now reproducible.
1. LTE/3G/2G Auto Mode + Wifi >> Signal loss
2. LTE/3G/2G Auto Mode without Wifi active >> Signal stays active
3. 3G/2G Auto Mode + Wifi >> Signal stays active
4. LTE/3G Auto Mode + Wifi >> Signal loss
I tried almost every Modem available for the G3 in development section(21A,21C, Those hybrid types etc.). I tried different Roms now (Cloudy, Fulmics 7.0, ZOEs).
I made a clean install of the original Firmware (V30B via LGFlashTool). Reinstalled my Backup from Fulmics 2.7
Then i tried setting different APN Settings and tried messing around with LTE Bands in the hidden Menu. But nothing worked so far.
The Issue stays over all Roms and Firmwares and Modems and Fixes i tried
I really don't know what i can do now to fix this. Maybe s.o. got a Clue or Hint what else i can try.
The LTE function is essential for me because my Provider (O2 Germany) only builds LTE Networks and 3G got less coverage here.
The only thing i can imagine is that the SIM Card or the SIM Card Holder somehow got damaged??? The Card worked proper with Fulmics 2.7 for about 2 years now. Until the Update.
Thanks in advance
Bananaphone64
No one suffers from this?
Having Ressurrection Remix installed now and it works fine. So it has something to do with the Stock LG Rom?
Bananaphone64 said:
No one suffers from this?
Having Ressurrection Remix installed now and it works fine. So it has something to do with the Stock LG Rom?
Click to expand...
Click to collapse
I was having this problem on Fulmics rom but it was not total loss of signals. It keeps on connecting and disconnecting after few seconds. Stock works fine though.
I have the same problem. Using T-mobile lg g3 d855.
Trying to resolve still...