Develop Bugs

[Q] Mobile network (3g or 2g or any net) not working on Tab 3 7.0 (sm t211)

Hello all
i got this tab (indian version t211) few days back
used it without root for the stock experience
was fed up so rooted it today
everything is working fine but i realize that mobile network is not working but i can make and receive calls
when i toggle switch on
it says "Insert Sim card"
i rebooted, cleared cache, dalvik too
but still the mobile network is not working
sim card is totally working fine for making calls and receiving one
some info
i am using xposed module
greenify
tinted status bar
xblast
rooted it with odin
with this flashable zip named " android-armeabi-universal-root-signed"
any help..?

ethical ricado said:
Hello all
i got this tab (indian version t211) few days back
used it without root for the stock experience
was fed up so rooted it today
everything is working fine but i realize that mobile network is not working but i can make and receive calls
when i toggle switch on
it says "Insert Sim card"
i rebooted, cleared cache, dalvik too
but still the mobile network is not working
sim card is totally working fine for making calls and receiving one
some info
i am using xposed module
greenify
tinted status bar
xblast
rooted it with odin
with this flashable zip named " android-armeabi-universal-root-signed"
any help..?
Click to expand...
Click to collapse
Was your 3g connection working befor you root the tab?
Have you got an EFS Folder and IMEI on your Tab?
Please call *#06# , if you see your IMEI from the Tab
Update your modem to the newest Version

bierma32 said:
Was your 3g connection working befor you root the tab?
Have you got an EFS Folder and IMEI on your Tab?
Please call *#06# , if you see your IMEI from the Tab
Update your modem to the newest Version
Click to expand...
Click to collapse
can you please explain the EFS thing..?
i dont get what you are saying
i havent done anything extra like what you are saying

bierma32 said:
Was your 3g connection working befor you root the tab?
Have you got an EFS Folder and IMEI on your Tab?
Please call *#06# , if you see your IMEI from the Tab
Update your modem to the newest Version
Click to expand...
Click to collapse
and btw i guess i figured out the problem
it happens when i use xposed framework
but as soon as i uninstall it, mobile services works fine

I don't think just rooting the tab is going to effect anything. I think you may have also loaded a rom from one of the developers. However, if all you did was root the tab then unroot back to original firmware. The reason I say you have added a different rom is your comment about the "stock experience". Just rooting does not change the "stock", it merely allows you to do things you normally would not do.
I recommend you go back to stock OEM until you find the cause of the problem.

Brian D said:
I don't think just rooting the tab is going to effect anything. I think you may have also loaded a rom from one of the developers. However, if all you did was root the tab then unroot back to original firmware. The reason I say you have added a different rom is your comment about the "stock experience". Just rooting does not change the "stock", it merely allows you to do things you normally would not do.
I recommend you go back to stock OEM until you find the cause of the problem.
Click to expand...
Click to collapse
yea i said that in my last post that the problem is with the xposed framework
thanks anyways

ethical ricado said:
yea i said that in my last post that the problem is with the xposed framework
thanks anyways
Click to expand...
Click to collapse
Sorry, I didn't see those postings. Apologize for not reading deeper into the thread.

WIFI will not turn on

Hi guys i have a lg g3 that has been running fine on kitkat
it the received the lollipop update OTA and all went fine apart from now it wont turn the WiFi on
you can click it on and it moves to on but seems to be always trying to turn on..?? without turning on.?
any ideas..?
I have done a reset etc still no joy

Did you try to reflash? (I think that you mean by resetting that you full wiped your phone and not reflashed the rom)

KingOfDope said:
Did you try to reflash? (I think that you mean by resetting that you full wiped your phone and not reflashed the rom)
Click to expand...
Click to collapse
Yes after it updated to lollipop I lost the ability to turn on wifi..
It was there to turn on but would not it showed it trying to turn on but just hung trying to turn on..device updated from kitkat to lollipop via its own update OTA.
Cn not work it out

sas007 said:
Yes after it updated to lollipop I lost the ability to turn on wifi..
It was there to turn on but would not it showed it trying to turn on but just hung trying to turn on..device updated from kitkat to lollipop via its own update OTA.
Cn not work it out
Click to expand...
Click to collapse
Try flashing the correct modem

KingOfDope said:
Try flashing the correct modem
Click to expand...
Click to collapse
Why or how could I do that..
Device was on stock kit Kat and it updated itself to lollipop..

Sent from my LG-D855 using XDA Free mobile app
Same issue here.
I get around it by forgetting network then just signing in again. Wifi works perfectly until I leave the house and return later. Then I just do the above and viola, working wifi.
I've checked with speed test app and wifi is definitely working.
Funny thing is, if I switch off wifi then turn back on it also works.
Only when ive left home and returned later does this bug arise.

Hello guys,
This thread is a little bit old, but I am curious to know if you found a workaround for this issue.
I have the same problem as the OP (not at the second poster): since I received Stock Lollipop the WiFi won't turn on. When I try to, it says "turning on" for a while then acts like it is off.
I just bought my LG G3, NCIX the reseller, refuses to refund me or replace my phone...
I performed several factory resets and tried to flash different KK stock Roms. The weird thing is that the WiFi works with KK...
Thanks for your help.

Identical experience here.
I recently got a D855 16GB, which was on stock unbranded V10a, jumped through several OTA updates through V10g, V10j, and V10k (IIRC) all with wifi working fine before getting the lollipop upgrade OTA for V20c.
Immediately wifi will not switch on - the switch itself is on, but with the off section a lighter grey compared to the bluetooth switch.
On the wifi screen itself it says "Turning Wi-Fi on..." but after a while the switch reverts to off.
It's now had OTAs to V20e and V20h, but wifi is dead on both versions.
Note that this is stock and unrooted (never rooted) so I can't believe it's something I've done. Next trick will be to root and poke around /data/misc/wifi.

Does bluetooth work or the problem is only with the wifi? I also have the same problem, wifi, bluetooth is not working and when I check in the settings the mac adress it says "unknown".
Sent from my Onda V975m using Tapatalk

Accountability
Unfortunately this isn't a unique problem. There have been countless bad updates from multiple manufacturers. In this litigious world, I'm surprised no one has sought damages for bad updates that effect usability.

I have the same problem from yesterday. wifi and bluetooth seem to be turning on but they never turn on. i've done many factory resets but it didn't work. has someone found a solution?

^^^ Exactly the same issue. Would love a solution!
Same issue. Tried Hard and soft reset and have also updated firmware using LG Mobile Support Tool but had no success.
sazi said:
I have the same problem from yesterday. wifi and bluetooth seem to be turning on but they never turn on. i've done many factory resets but it didn't work. has someone found a solution?
Click to expand...
Click to collapse

ok, after 24h with this problem I think I got it back to working. Let me explain what have I done:
1. Mine is a dual sim model, that I bought in hong kong by the end of 2014.
2. Yesterday, I removed sim #2 (no longer needed), without removing the battery. I had a couple of messages indicating to restart the phone, blah blah. Can't remember if I finally restarted it or not.
3. This morning I saw no wifi connection in my phone, only 3G. Tried to start wifi in the quick access menu, but this kept blinking, never starting wifi. Restarting phone... nothing. turning off bluetooth... nothing.
I figured out that the problem had to be related with the SIM as this is the last thing I had done with the phone. Thus, I tried this, with success:
4. I turned off the phone, changed sim from slot #1 to slot#2 and started the phone. Wow, it worked for some minutes, then stopped, then started again. Well, a good sign.
5. Changed again sim from slot #2 to slot #1: Wifi working again. After some time it stopped working, but soon started again. Hasn't given me more problems (after only 30 min, that's true).
Hope it helps.

jimbobmcginty said:
Identical experience here.
I recently got a D855 16GB, which was on stock unbranded V10a, jumped through several OTA updates through V10g, V10j, and V10k (IIRC) all with wifi working fine before getting the lollipop upgrade OTA for V20c.
Immediately wifi will not switch on - the switch itself is on, but with the off section a lighter grey compared to the bluetooth switch.
On the wifi screen itself it says "Turning Wi-Fi on..." but after a while the switch reverts to off.
It's now had OTAs to V20e and V20h, but wifi is dead on both versions.
Note that this is stock and unrooted (never rooted) so I can't believe it's something I've done. Next trick will be to root and poke around /data/misc/wifi.
Click to expand...
Click to collapse
HELLO
I have exactly the same problem and I think we're not the only...
D855 :
-Wifi and Bluetooth doesn't work.
-Wifi keep turning on itself and the battery drain..
-3g/4g works perfectly.
-Downgraded on kk and Wi-Fi works so it is not a hardware issue
-Even on fulmics Rom Wi-Fi and Bluetooth doesn't work
HEELP ME PLEASE

Got the same problem here. I have my G3 since november 2014 and recently I rooted it to install CM 13 on it and Xposed bcs I got tired of the laggy software of LG. One morning I woke up to drink some water and saw my phone restarting a lot of time... ok I thought its a simple bootloop. Tried to install CM again, didnt fix it. Flashed stock software and still... Bought new battery and new power flex and the problem is still there. I go into download mode, installed the software with LGs support tool and got pass the bootloop, but now wifi nor bluetooth works. I thought it's the software so I dared myself again to root it and installed TWRP and CM13, but it wouldn't boot. I installed then Liquidsmooth, based on CM13, and got it to boot up, but in the configuration menu where WiFi is needed to be added it couldn't turn on. I skiped it and in the middle of the process it started again to restart. I don't know if it's a hardware based problem or software... But I would like to try everything out before I have to buy a new phone.

SoulEater45 said:
Got the same problem here. I have my G3 since november 2014 and recently I rooted it to install CM 13 on it and Xposed bcs I got tired of the laggy software of LG. One morning I woke up to drink some water and saw my phone restarting a lot of time... ok I thought its a simple bootloop. Tried to install CM again, didnt fix it. Flashed stock software and still... Bought new battery and new power flex and the problem is still there. I go into download mode, installed the software with LGs support tool and got pass the bootloop, but now wifi nor bluetooth works. I thought it's the software so I dared myself again to root it and installed TWRP and CM13, but it wouldn't boot. I installed then Liquidsmooth, based on CM13, and got it to boot up, but in the configuration menu where WiFi is needed to be added it couldn't turn on. I skiped it and in the middle of the process it started again to restart. I don't know if it's a hardware based problem or software... But I would like to try everything out before I have to buy a new phone.
Click to expand...
Click to collapse
I'm not the only one
I don't understand why it doesn't work because if you downgrade on kk versions your wifi & bluetooth will be back...

tchointeur said:
I'm not the only one
I don't understand why it doesn't work because if you downgrade on kk versions your wifi & bluetooth will be back...
Click to expand...
Click to collapse
Have you maybe tried to change the kernel of your device? I have never done that so I am scared if I would damage something.
http://forums.androidcentral.com/google-nexus-7-tablet-2013/306730-wifi-stuck-turning.html
Here someone says it's the kernel that is having problems and installing a new one and going maybe back to the old one will fix it.

SoulEater45 said:
Have you maybe tried to change the kernel of your device? I have never done that so I am scared if I would damage something.
http://forums.androidcentral.com/google-nexus-7-tablet-2013/306730-wifi-stuck-turning.html
Here someone says it's the kernel that is having problems and installing a new one and going maybe back to the old one will fix it.
Click to expand...
Click to collapse
Maybe but wich kernel do we haveto use? Even on fulmics 5.3 it doesn't work!

tchointeur said:
Maybe but wich kernel do we haveto use? Even on fulmics 5.3 it doesn't work!
Click to expand...
Click to collapse
I installed CM13 and in the setup screen I actually had wifi and I could connect to my router. It was kinda strange. But bcs I have some problems beside wifi, the reboot thing, I couldn't test out if it works too. Try flashing CM13 or ROMs that are based on it like Liquidsmooth. Maybe it will help.

SoulEater45 said:
I installed CM13 and in the setup screen I actually had wifi and I could connect to my router. It was kinda strange. But bcs I have some problems beside wifi, the reboot thing, I couldn't test out if it works too. Try flashing CM13 or ROMs that are based on it like Liquidsmooth. Maybe it will help.
Click to expand...
Click to collapse
I tried flashing other roms but twrp says "unmount of /system failed: no such volume " "script succeeded: result was (0.20000)".. when i restart it's on bootloop NO CHANCE

WiFi issue after ota tab 3 7in SM-T210

Hi all i recently bought a no fault customer returned tab 3 7in SM-T210, Today I received my tab 3 and after the first boot I was offered an update, Build number KOT49H.T210XXBOA3, dated 22 jan 2015 at 110mb.
After the update had finished I was unable to connect to my WiFi, it would say connected but the settings app would freeze sometimes with the message that settings is not responding, if I do manage to get out of the settings I am unable to use the internet as all apps say no connection, even though the WiFi icon is showing as connected. I have also found that changing the screen off time to 1 minute cause's the device to soft reboot ( No Samsung galaxy tab 3 screen / bootloader )
I have tried doing factory reset but that didn't help,
Could flashing the full 828mb stock ROM via Odin possibly fix these issues?
And if I do use Odin to flash stock my warranty should remain?
Sorry for the long winded post, and thanks in advance for any advice given
Sent from my moto g using XDA Free mobile app

plewis1981 said:
Hi all i recently bought a no fault customer returned tab 3 7in SM-T210, Today I received my tab 3 and after the first boot I was offered an update, Build number KOT49H.T210XXBOA3, dated 22 jan 2015 at 110mb.
After the update had finished I was unable to connect to my WiFi, it would say connected but the settings app would freeze sometimes with the message that settings is not responding, if I do manage to get out of the settings I am unable to use the internet as all apps say no connection, even though the WiFi icon is showing as connected. I have also found that changing the screen off time to 1 minute cause's the device to soft reboot ( No Samsung galaxy tab 3 screen / bootloader )
I have tried doing factory reset but that didn't help,
Could flashing the full 828mb stock ROM via Odin possibly fix these issues?
And if I do use Odin to flash stock my warranty should remain?
Sorry for the long winded post, and thanks in advance for any advice given
Sent from my moto g using XDA Free mobile app
Click to expand...
Click to collapse
Why is t210 so many issue? seriously!?
If one thing i need to clarify that doing any custom modification on the device will spoil your warranty. However if you did firmware stuff from kies will not remove your warranty. I would choose to flash into new firmware by using odin. But if your case you can do a factory reset then followed by kies and see if it is working. If it is not, download stock firmware from the net and flash it with odin.

thanks @Jacker31 for the response, i know about voiding warranty there is no custom software on it YET lol, only just got it out of the box, i am new to Samsung devices so i will do some research into kies, just don't want to void my warranty trying to sort it out.

plewis1981 said:
thanks for the response, there is no custom software yet only just got it out of the box, i am new to samsung devices so i will do some research into kies
Click to expand...
Click to collapse
Kies are easy and ready to use after its installation.
check out this link for more info:
http://forum.xda-developers.com/showthread.php?t=2261153

I don't know if it's the same problem with my wife's tab t210. when you turn on the wifi it connects but around many seconds, the wifi icon is gone. and in settings the wifi freeze. i've done rebooting, restore factory settings but it didn't fix the problem. but when i try it to connect via my phone tethering it connects and the wifi icon stays. i check the tethering settings it was put on wpa2, but on my router it was just on wpa. So i change it to wpa2 and the problem on my wife's tab is gone.

bukog25 said:
I don't know if it's the same problem with my wife's tab t210. when you turn on the wifi it connects but around many seconds, the wifi icon is gone. and in settings the wifi freeze. i've done rebooting, restore factory settings but it didn't fix the problem. but when i try it to connect via my phone tethering it connects and the wifi icon stays. i check the tethering settings it was put on wpa2, but on my router it was just on wpa. So i change it to wpa2 and the problem on my wife's tab is gone.
Click to expand...
Click to collapse
sounds like ur device does not support wpa correctly.

Hi guys, so I installed kies3 but when I click the firmware upgrade button I get this message 'SM-T210' dose not support initializing. even though i had USB debugging selected. I also tried while the device was unplugged by entering the model and serial numbers but got the same response.
If I flash a stock firmware by Odin will the device log it on the flash counter? as it came with a 12 month warranty and i will send it back if i cannot fix it myself.
Sent from my moto g using XDA Free mobile app

plewis1981 said:
Hi guys, so I installed kies3 but when I click the firmware upgrade button I get this message 'SM-T210' dose not support initializing. even though i had USB debugging selected. I also tried while the device was unplugged by entering the model and serial numbers but got the same response.
If I flash a stock firmware by Odin will the device log it on the flash counter? as it came with a 12 month warranty and i will send it back if i cannot fix it myself.
Sent from my moto g using XDA Free mobile app
Click to expand...
Click to collapse
You should send it back because of the warranty, anything could happen (I meant for the warranty) if we do something.

Lg g4 cant download marshmallow update OTA

I received notifaction about a new software update and its being downloaded .. When i left wi-fi coverage and went back it didnt resume so i restarted my phone and it doenst resume since then .. Though i have both data service and wi-fi working .. I guess the problem might be that the pacakge it partially downloaded has been corrupted somehow and needs to be removed so it can start fresh but i dont know thr name of package or where can i find it .. Please help

Try with Lg Bridge

Same here - but I solved this problem.
It's as easy as it sounds! - Get in Touch with the LG-Chat-Support and tell them about your problem. They will ask for your IMEI and only about 48h at max. you will receive the OTA-Info on your screen, like it was on mine!
It's something because of IMEI's and their registrations... ask the Support for further details.
Take a look on this thread - explained the exactly same problem there as a sidenote.
Read me!

Airplane mode on, network problem ZUK Z2

Hello, I'm having problem with my zuk z2. I've had phone for more than a month and it worked fine. I flashed mokee rom and was working excellent. After one update it couldn't connect to network and phone was stuck in airplane mode. It's not showing that airplane mode is on, only when I press power button it says it's on, but nothing happend when pressed. It detects both sim cards but can't get registered on network. Also in secret menu (*#*#4636#*#*) shows Radio off and can't turn it on, or change anything in that menu. I changed a lot of custom and stock roms, with locked and unlocked bootloader, nothing solved the problem. When flash fresh rom it has network (not after every flash), but after some times it just gets disconnected. Please, help me. If someone have solved this problem or have any idea what problem could be.
Edit: I found out that my sim slots IMEI change places, IMEI1 goes to slot 2.

i got the same problem

Same problem here with offician Indian ZUI

damn.. i thought this happened only with china rom.
didn't know it got same issue here.

Same problem

Same problem here. 2.0.133 ST official indian ROM. Any news about this problem?

I have the same issue running Slim 6 on zuk z2

i installed mokee os and the signal comeback again but actually not worked

Yes, I also installed mokee nightly 4/22 and its been working great. Signal is back

me too
Same problem Here.... bought on banggood and after one month network signal disappeared. Today I've unlocked the bootloader and installed Mokee stable ( 13-4-2017) and Lineage 14.1 of 16-01-2017 .... nothing! Still not working.
I suppose it is a failed lot from ZUK delivered from banggood/gearbest/ali ...
I've just wrote an email to zuk support in order to complain about it ...
Yes, because, right now I cannot send back in china at my expenses the equipment and pay for a substitution with another defective terminal.
I've just asked them hoto behave....
I suppose we need to start a class action like the one against samsung for S7 note
However, I'm very disappointed, 1 month and it was looking like a wonderful terminal ...fooooook.

Same problem here. Anybody please share the QCN backup (or valid link to download this) to try repair QCN and IMEIS ?

Same problem here:
I tested different roms and different baseband-versions still no network.
Edit: I also tried flashing it via an external tool - still does not work
http://www.androidbrick.com/zuk-z2-z2-pro-qpst-qfil-miflash-rom-flashing-guide/

I install the Z2plus_MIUI8_6.12.1_zukkati.zip ROM and recover the radios. I feel good!!!!!
Then I installed 2.5.334ST via Qfil, installed TWRP and install other ROMs and everything works fine.

Any Luck guys? Please help if anyone manage to resolve this issue.
Thank you!

Same with me
I had this problem also one month ago, bricked the phone and endly I could it get working again with lingeage on it. Was working perfect.
Today the problem is there again.
When I start the phone without the simcard airplane mode is off (when I touched the power button) with the simcard in the phone it starts with airplane mode on.
Is there a possibility to disable airplane mode complete?
Anyone any idea?

This problem has been around for ages, and no apparent solution to it. Sent it back to warranty and it got flashed frm Custom ROM and back to stock ROM with same results. Useless. Dead.
Got a partial refund instead .

Guys there is any solution?? I have this problem with my Zuk Z2.. Plz help me

Problem Solved
I also had same problem tried all methods described here and in zukfans.eu, but failed. At last discharging(shorting) some capacitor related to network IC did the job.

murtoz said:
I also had same problem tried all methods described here and in zukfans.eu, but failed. At last discharging(shorting) some capacitor related to network IC did the job.
Click to expand...
Click to collapse
hey, could you provide some more info? is it hard?

Same problem
I got the same problem, could someone help me with repairing this? Flashing roms didn't help
Could you say more information about discharging capacitor? Is it possible to do in home?