[Q] Network drops sometimes - Galaxy S 4 Mini Q&A, Help & Troubleshooting

Hi all,
Although i'm new to posting to this forum, i'm reading it for about a year now, but couln't find a topic in which my problem with the Galaxy S4 mini is covered..
I got this phone for about a week now, and overall i like it al lot. I just got i rooted 1 day now because i wanted to put back some apps from my old HTC Desire, and wanted to have root acces anyway.
However i'm experiencing some network drops since i got the phone, which means that i can't call, and internet wont work. When i restart the phone (or switch on/off airplane mode) the problem is solved for a while..but it comes back again now and then..very frustrating cause i feels unreliable. This was also happening a few times before i rooted.
It's probably not due to the sim-card, because i never experienced some problem like this in my old phone with the same sim..
Does anybody know how i could solve this problem ?
Thanx a lot.

Mascarponi said:
Hi all,
Although i'm new to posting to this forum, i'm reading it for about a year now, but couln't find a topic in which my problem with the Galaxy S4 mini is covered..
I got this phone for about a week now, and overall i like it al lot. I just got i rooted 1 day now because i wanted to put back some apps from my old HTC Desire, and wanted to have root acces anyway.
However i'm experiencing some network drops since i got the phone, which means that i can't call, and internet wont work. When i restart the phone (or switch on/off airplane mode) the problem is solved for a while..but it comes back again now and then..very frustrating cause i feels unreliable. This was also happening a few times before i rooted.
It's probably not due to the sim-card, because i never experienced some problem like this in my old phone with the same sim..
Does anybody know how i could solve this problem ?
Thanx a lot.
Click to expand...
Click to collapse
You could update the baseband: I9195 is here http://forum.xda-developers.com/showthread.php?t=2545784
I'm not sure if it'll knox it up, but usually it shouldn't

Aronuser said:
You could update the baseband: I9195 is here http://forum.xda-developers.com/showthread.php?t=2545784
I'm not sure if it'll knox it up, but usually it shouldn't
Click to expand...
Click to collapse
Thanks for your reply, but when checking my phone-info it says already 'baseband version I9195XXUBNB3' which is the baseband from the topic i believe..is that the latest one?
Next to that,, I already knoxed it up, cause i flashed CWM yesterday..

I have experienced same thing, tried different official firmwares, also some unofficial tw, and cm roms, happens time to time, usually fix this by selecting my network operator again.

kodyro said:
I have experienced same thing, tried different official firmwares, also some unofficial tw, and cm roms, happens time to time, usually fix this by selecting my network operator again.
Click to expand...
Click to collapse
I read on other forums that some other users are experiencing indeed the same problem..for me it happened a couple of times a day in the beginning. Then in my 'sim-menu' app i switched from 'manual sim-selection' to 'automatic sim-selection' .. it looked like this helps a bit, but i recently experienced the network drop again, so the problem is still not gone..
You can regain network again by switching on/off, but if you're phone is in your pocket you don't know if network suddenly got lost, so i think it's a quiet unreliable phone for now..

Mascarponi said:
Thanks for your reply, but when checking my phone-info it says already 'baseband version I9195XXUBNB3' which is the baseband from the topic i believe..is that the latest one?
Next to that,, I already knoxed it up, cause i flashed CWM yesterday..
Click to expand...
Click to collapse
Thats the latest baseband, but there is another in the topic too, you could try the other one too :good:
also
if you already knoxed it up you could flash the latest firmware from www.sammobile.com and check if it does the trick (if you don't have the latest already)
---------- Post added at 11:20 PM ---------- Previous post was at 11:17 PM ----------
Mascarponi said:
I read on other forums that some other users are experiencing indeed the same problem..for me it happened a couple of times a day in the beginning. Then in my 'sim-menu' app i switched from 'manual sim-selection' to 'automatic sim-selection' .. it looked like this helps a bit, but i recently experienced the network drop again, so the problem is still not gone..
You can regain network again by switching on/off, but if you're phone is in your pocket you don't know if network suddenly got lost, so i think it's a quiet unreliable phone for now..
Click to expand...
Click to collapse
kodyro said:
I have experienced same thing, tried different official firmwares, also some unofficial tw, and cm roms, happens time to time, usually fix this by selecting my network operator again.
Click to expand...
Click to collapse
Mascarponi said:
Thanks for your reply, but when checking my phone-info it says already 'baseband version I9195XXUBNB3' which is the baseband from the topic i believe..is that the latest one?
Next to that,, I already knoxed it up, cause i flashed CWM yesterday..
Click to expand...
Click to collapse
Aronuser said:
Thats the latest baseband, but there is another in the topic too, you could try the other one too :good:
also
if you already knoxed it up you could flash the latest firmware from www.sammobile.com and check if it does the trick (if you don't have the latest already)
Click to expand...
Click to collapse
Yet another thing is:
Get the app "service mode shurtcut" https://play.google.com/store/apps/details?id=com.kabasoft.util.servicemodeshortcut&hl=de
Go into the "test" menu
and select "telephone information"
then select a different network type (not sure which, just try it)

I believe i'm already at the latest firmware..i updated OTA yesterday before i rooted my device, and i seems that i got the same build as from the latest version from the sammobile website..
I tried the ServiceMode Shortcut, but when trying to open the app it says 'not supported'
Also, when trying to change network-modus, i only can choose : GSM/ WCDMA (automatic) , GSM Only, WCDMA only...there is no 4G option , isn't that strange ?

Mascarponi said:
I believe i'm already at the latest firmware..i updated OTA yesterday before i rooted my device, and i seems that i got the same build as from the latest version from the sammobile website..
I tried the ServiceMode Shortcut, but when trying to open the app it says 'not supported'
Also, when trying to change network-modus, i only can choose : GSM/ WCDMA (automatic) , GSM Only, WCDMA only...there is no 4G option , isn't that strange ?
Click to expand...
Click to collapse
if you like you could just flash cyanogenmod and see if there is a difference!?
/edit:
then you could try accessing that menu again too :good:
---------- Post added at 11:54 PM ---------- Previous post was at 11:52 PM ----------
Mascarponi said:
I believe i'm already at the latest firmware..i updated OTA yesterday before i rooted my device, and i seems that i got the same build as from the latest version from the sammobile website..
I tried the ServiceMode Shortcut, but when trying to open the app it says 'not supported'
Also, when trying to change network-modus, i only can choose : GSM/ WCDMA (automatic) , GSM Only, WCDMA only...there is no 4G option , isn't that strange ?
Click to expand...
Click to collapse
OR
you could reflash stock, maybe there was a failure when updating?!

Aronuser said:
if you like you could just flash cyanogenmod and see if there is a difference!?
/edit:
then you could try accessing that menu again too :good:
---------- Post added at 11:54 PM ---------- Previous post was at 11:52 PM ----------
OR
you could reflash stock, maybe there was a failure when updating?!
Click to expand...
Click to collapse
I maybe will try Cyanomod...but i am not sure yet, cause i think it should work proper just out of the box..and cyanomod still got some bugs right ? I didn't quiet changed a lot on the device yet, got i for less than one week for now...also got no errors of failures when updating or so.. :S

Mascarponi said:
I maybe will try Cyanomod...but i am not sure yet, cause i think it should work proper just out of the box..and cyanomod still got some bugs right ? I didn't quiet changed a lot on the device yet, got i for less than one week for now...also got no errors of failures when updating or so.. :S
Click to expand...
Click to collapse
yeah if you flash cyanogenmod you maybe end up bricking it, but a brick can usually be solved
um... yeah it should work out of the box, maybe the hardware is damaged too!?
If you still consider flashing cyanogenmod one day and wanna stay on a fairly safe site, then use a "stable version" :good:
i'm using a nightly now, and so far it works pretty pretty fine, just 2 crashes in a app but it worked again after retrieng it
---------- Post added at 12:18 AM ---------- Previous post was at 12:17 AM ----------
Mascarponi said:
I maybe will try Cyanomod...but i am not sure yet, cause i think it should work proper just out of the box..and cyanomod still got some bugs right ? I didn't quiet changed a lot on the device yet, got i for less than one week for now...also got no errors of failures when updating or so.. :S
Click to expand...
Click to collapse
since you got the network issues since you have the phone,
it's most likely hardware demage

Today i restarted my phone cause at night battery runned low..when booted up i connects with the gsm-network, although data-connection won't start. So i CAN call phone-numbers, but can't browse the internet .. when turning on/off airplane mode it reconnects to the internet-connection again..
Aronuser said:
yeah if you flash cyanogenmod you maybe end up bricking it, but a brick can usually be solved
um... yeah it should work out of the box, maybe the hardware is damaged too!?
If you still consider flashing cyanogenmod one day and wanna stay on a fairly safe site, then use a "stable version" :good:
i'm using a nightly now, and so far it works pretty pretty fine, just 2 crashes in a app but it worked again after retrieng it
---------- Post added at 12:18 AM ---------- Previous post was at 12:17 AM ----------
since you got the network issues since you have the phone,
it's most likely hardware demage
Click to expand...
Click to collapse
You mentioned when installing CM i may end up bricking the phone..why is that ? Isn't it just as easy as flashing a new rom via CWM ?
And then, which CM rom would you suggest ? 10.2 of 11 ?

Mascarponi said:
... i'm experiencing some network drops since i got the phone, which means that i can't call, and internet wont work. When i restart the phone ... the problem is solved for a while..but it comes back again ...
Click to expand...
Click to collapse
I have this same problem with my not-rooted S4 mini [SGHi257M Rogers Canada]. I have had the phone since early December last year. The problem started recently [perhaps a month ago?]. I returned the phone for repair about a week ago. I should have it back within the next week or so. I'll post here when i get it back, especially if it comes back with any useful info.
Here is the thread where two weeks ago i posted the description of the problem ...
Odd Problem with SGHi257M
http://forum.xda-developers.com/showthread.php?t=2734738
Mick

Mascarponi said:
Today i restarted my phone cause at night battery runned low..when booted up i connects with the gsm-network, although data-connection won't start. So i CAN call phone-numbers, but can't browse the internet .. when turning on/off airplane mode it reconnects to the internet-connection again..
You mentioned when installing CM i may end up bricking the phone..why is that ? Isn't it just as easy as flashing a new rom via CWM ?
And then, which CM rom would you suggest ? 10.2 of 11 ?
Click to expand...
Click to collapse
Of course when you'll follow the steps properly it's usually work, no worries! I'd recommend CM11, it also has the newest version of android 4.4.2 :good:

del ebyanym
mdawdy said:
I have this same problem with my not-rooted S4 mini [SGHi257M Rogers Canada]. I have had the phone since early December last year. The problem started recently [perhaps a month ago?]. I returned the phone for repair about a week ago. I should have it back within the next week or so. I'll post here when i get it back, especially if it comes back with any useful info.
Here is the thread where two weeks ago i posted the description of the problem ...
Odd Problem with SGHi257M
http://forum.xda-developers.com/showthread.php?t=2734738
Click to expand...
Click to collapse
Hey Mdawdy, thanks for your information, it looks like it's indeed like the same problem !
I'm looking forward to hear if the problem still exists when you receive your phone back from repair, and what they say the problem was..
Unfortunately i'm already rooted, so i probably can't send it back to repair because I voided the warranty , or is it still possible somehow ?

Mascarponi said:
Hey Mdawdy, thanks for your information, it looks like it's indeed like the same problem !
I'm looking forward to hear if the problem still exists when you receive your phone back from repair, and what they say the problem was..
Unfortunately i'm already rooted, so i probably can't send it back to repair because I voided the warranty , or is it still possible somehow ?
Click to expand...
Click to collapse
Rooting doesn't especially mean that you've KNOX, i think it's only really warranty void if it has KNOX 0x1.
Enter Download mode to see if it has KNOX 0x1 or not (good would be 0x0)
/edit:
also if you live in the EU, i heard that even a knox'ed up device still has warranty

Aronuser said:
Rooting doesn't especially mean that you've KNOX, i think it's only really warranty void if it has KNOX 0x1.
Enter Download mode to see if it has KNOX 0x1 or not (good would be 0x0)
/edit:
also if you live in the EU, i heard that even a knox'ed up device still has warranty
Click to expand...
Click to collapse
Already checked , and i indeed knox'ed up my device, 0x1 it is, and had to remove 3 KNOX apps from system because i got messages like "attempted to access your system on your device without authorisation" ..
But i live in EU so i might be lucky if you're right..will check on that.

Got one network drop today again. When the phone-battery was emty, i started to charge, then booted the phone...in the 10 minutes after booted up, tried to send a sms but couln't be sended because phone wasn't connected to the network..
Maybe i got something to do with charging the phone at the same time .. ? Just thinking out loud...
Other question..when checking the menu for selecting 2g/3g WDCMA auto..i can't find an option for using 4G ,,however the phone says it should support this. Can only choose from3 options: GSM/WCDMA (auto) , GSM, WCDMA. Is this correct ?

Mascarponi said:
Hey Mdawdy, thanks for your information, it looks like it's indeed like the same problem !
I'm looking forward to hear if the problem still exists when you receive your phone back from repair, and what they say the problem was..
Unfortunately i'm already rooted, so i probably can't send it back to repair because I voided the warranty , or is it still possible somehow ?
Click to expand...
Click to collapse
I got my phone back today. On the report it says ...
Complaint
#1[]C56-no service
phone antenna cutting out intermittently
Symptom code C56
Work performed
[202]-Full sw upgrade & phone reset
;sw re-flashed then rebuild to factory default
Repair code 202
I'll see if it happens again or not over the next few days and report back. To me it sounds like they did nothing to the physical components of the phone, just flashed/installed/configured the various software components.
Mick

Thanks for your information !
Seems indeed they didn't do a lot you couldnt do yourself ...
What do they mean by 'sw' btw ?
I'm curious if you still get the antenna dropoups from now on..
mdawdy said:
I got my phone back today. On the report it says ...
Complaint
#1[]C56-no service
phone antenna cutting out intermittently
Symptom code C56
Work performed
[202]-Full sw upgrade & phone reset
;sw re-flashed then rebuild to factory default
Repair code 202
I'll see if it happens again or not over the next few days and report back. To me it sounds like they did nothing to the physical components of the phone, just flashed/installed/configured the various software components.
Mick
Click to expand...
Click to collapse

Mascarponi said:
..
What do they mean by 'sw' btw ?
Click to expand...
Click to collapse
sw=SoftWare :highfive:

Related

my desire died out of nowhere... :( please help!, rooted with R5, MCR 3.1 for 2weeks

dear all,
My Telstra branded HTC Desire 8183 died out of nowhere.
Here's what I did:
Rooted with R5
MCR 3.1 ROM (custom kitchen with A2SD+) and r17 froyo rom (mostly MCR3.1)
everything went well, and i was happy with it for 2 weeks (blasting fast HSDPA speed and runs perfectly fine)
i noticed the signal strength was really low two days ago, i thought it was my area having service outage. (called and confirmed) I had my girlfriend's Nexus One AT&T version side by side she's getting full bars.
now the phone will show Emergency Call Only all the time, sometimes even with signal, i wont be able to use the data connection (it's show H, but cant even load google.com with the browser)
Diagnostics that i had done:
unroot with generic WWE rom with goldcard (since the telstra rom that people posted on here have 0.75 bootloader and mine is 0.8 so i can only use 1.21 generic WWE rom)
root again with R5 method
update radio
install MCR 3.1 again
replaced my sim card at AT&T store just to make sure
called AT&T to inquire about service outage
none of them works, now i'm stuck with a phone that doesnt make phone calls and data connection.
did i do anything wrong that mess up the radio of the phone? are these rooting guide and custom rom don't support 8183?
please help me! i really like this phone and it's such a waste to let it sit there
best regards,
ted
The emergency calls only thing is usually associated with a sim problem - like invalid sim, unactivated sim etc.
Have you paid your account?
thanks for the advise
yes i did...same thing happened, sometimes when i get signal, i cant seem to use data connection...cant even make phone calls...if im lucky i can make 1 out of 10 times..
i suspected the sim card problem, that's why i went to AT&T store for a replacement.
Solved
I had the same problem, I also have the A8183
To solve it, I went fastboot mode with USB plugged.
then on Android SDK, I did :
./fastboot-mac enableqxdm 0
./fastboot-mac oem boot
just fastboot for pc
and the phone reboot, turn it off and insert your SIM.
I knew it was fix first boot because sdcard was now mountable.
Then SIM was recognized.
But then I have USB problem in recovery, I think I'll need to flash the misc partition.
blauze said:
I had the same problem, I also have the A8183
To solve it, I went fastboot mode with USB plugged.
then on Android SDK, I did :
./fastboot-mac enableqxdm 0
./fastboot-mac oem boot
just fastboot for pc
and the phone reboot, turn it off and insert your SIM.
I knew it was fix first boot because sdcard was now mountable.
Then SIM was recognized.
But then I have USB problem in recovery, I think I'll need to flash the misc partition.
Click to expand...
Click to collapse
What you are describing is the fix for the usb brick issue. This is not the problem here.
To me this sounds like a faulty handset, as all the software fix options seem to have been done. I'm no expert though!
what is fastboot-mac
im using windows xp with androidsdk tools
i have fastboot command...how do i type that?
socktug said:
What you are describing is the fix for the usb brick issue. This is not the problem here.
To me this sounds like a faulty handset, as all the software fix options seem to have been done. I'm no expert though!
Click to expand...
Click to collapse
is it really? i got my hopes up for a second...i really wanna get this thing fixed...
teddyonair said:
is it really? i got my hopes up for a second...i really wanna get this thing fixed...
Click to expand...
Click to collapse
You can give the commands a go, but I doubt they will help with this. Have a look at the threads on usb brick.
socktug said:
You can give the commands a go, but I doubt they will help with this. Have a look at the threads on usb brick.
Click to expand...
Click to collapse
tried the first command, it says "waiting for device"...no response from phone and command prompt at all
hey guys, keep the opinions coming...thanks in advance!
Try flashing to a different compatible radio version as the version you currently have may be causing the poor reception/signal strength issues.
-------------------------------------
Sent via the XDA Tapatalk App
MasDroid said:
Try flashing to a different compatible radio version as the version you currently have may be causing the poor reception/signal strength issues.
-------------------------------------
Sent via the XDA Tapatalk App
Click to expand...
Click to collapse
i did tried 3 different radio...its not just signal being weak...kept on showing X and whenever i tried to use the data connection when H shows up, it will just stuck there when loading google.com in browser.
teddyonair said:
thanks for the advise
yes i did...same thing happened, sometimes when i get signal, i cant seem to use data connection...cant even make phone calls...if im lucky i can make 1 out of 10 times..
i suspected the sim card problem, that's why i went to AT&T store for a replacement.
Click to expand...
Click to collapse
Hmmmm - the rooting process does not affect the A8183 - cos that's what I've got and it works fine. Maybe try and flash the Telstra ROM? That's the one that would have come with the phone in the first place. Who knows, that might reset something? Probably a long shot but you sound desperate!
You can get that ROM in the ROM sticky in this topic.
Now i have 0.80 bootloader it wont let me install the telstra rom since bootloader version being different (0.75)
any idea how i can override that?
After the rooting process when i first got the phone everything was working fine til two days ago
teddyonair said:
Now i have 0.80 bootloader it wont let me install the telstra rom since bootloader version being different (0.75)
any idea how i can override that?
After the rooting process when i first got the phone everything was working fine til two days ago
Click to expand...
Click to collapse
you could try this: http://android.modaco.com/content/h...-com/310186/mcr-telstra-8183-mod-version-3-5/
I think that will work with 0.80 bootloader.
I guess it's not easy to take the device for repair as I'm tippin you got it through eBay or similar, and HTC in the US probably won't support the warranty.
I believe that i had sort of the same issue as you are describing, sometimes my 3G connection died, and there was nothing i could do too get it back, and it sometimes failed to make a connection when i tried to make calls with full coverage.
I don't know how i got the problem, because the phone has been fine since i rooted it 1 week ago.
I decided to go back to the latest radio update I had before I rooted, and now it works fine again.
I used 32.34.00.28U_4.05.00.30_2 from the stock HTC radios thread. (new users not able to post links)
Hope this solves your issue as well, I have an unbraded Desire A8181.
JoakimCarli said:
I believe that i had sort of the same issue as you are describing, sometimes my 3G connection died, and there was nothing i could do too get it back, and it sometimes failed to make a connection when i tried to make calls with full coverage.
I don't know how i got the problem, because the phone has been fine since i rooted it 1 week ago.
I decided to go back to the latest radio update I had before I rooted, and now it works fine again.
I used 32.34.00.28U_4.05.00.30_2 from the stock HTC radios thread. (new users not able to post links)
Hope this solves your issue as well, I have an unbraded Desire A8181.
Click to expand...
Click to collapse
im going to give the radio you mentioned a try...would u mind telling me where are you located and what network provider are you with?
Tried that radio already now it shows signal but the behaviors are the same, feels like its trying to establish connection but got stuck on upload (not sure if thats the case since only the up arrow stay lit but not the other one)
@teddyonair: did u drop down ur mobile by any chance ??? might be some hardware disconnection inside is giving u this trouble i guess.... otherwise with so many software reflashing & modding,ur mobile should have been working by now....
u better get a professional help either from the htc or from someone who deals with htc repairs.... this is my sincere advice if u wish to listen to me.... hope u have not screwed up ur mobile.... might be a hardware problem... just try this once... ok ????
i've managed to unroot the phone with telstra shipped rom. phone has been acting the same way.
so im not sure if it's the hardware issue. anybody has experience how to send the phone back to Telstra Australia for repair?
thanks!
It sounds to me like you may have a faulty antenna in your phone

[Q] Network Unavailable After Flashing New Rom

I have a Note ii n7100
I flashed to Paranoid Android earlier in the year and thought I'd try out something else for fun again this morning.
I first went to monxdified (monxDIFIED-N7100-XXDME1-13-01.zip) and there was cell signal but I couldn't get onto a cell network (I'm a three UK customer). It would say registered on network but would never actually register.
I then tried selecting a different radio in the installer, the top one, rather than the 2nd one - I was guessing that this was the issue. Same problem.
I then tried going to cyanogen (what I saw as a more trusted/well known rom to try that out) - this time it finds the network but says there is no signal and that (3UK) is unavailable.
I've been reading and I may have wiped my imei number, at this point I got scarred and thought I'd check here before messing this up any further.
I hope I've put this thread in the correct place. Thanks in advance.
Note: I can still read a value for my imdi number in settings, hopefully this means it isn't lost?
Closing Thread
charlieegan3 said:
...
Click to expand...
Click to collapse
I've gone right back to defaults now with odin and am beginning to think it's an issue with my SIM.
Just closing this thread.
Don't forget to take your EFS backup.
Maybe you will live that problem again.
no it is not a SIM problem, i have the same problem, i did a backup for the previous rom but there is no network signal at all.
it would be great if anybody will help.
thanks in advance.
bodii_91 said:
no it is not a SIM problem, i have the same problem, i did a backup for the previous rom but there is no network signal at all.
it would be great if anybody will help.
thanks in advance.
Click to expand...
Click to collapse
try downgrade your modem..
Fataldose said:
Don't forget to take your EFS backup.
Maybe you will live that problem again.
Click to expand...
Click to collapse
I didn't take an EFS Backup, the last time flashed a new ROM (Paranoid Android) I didn't need to. I assumed this would be the same story.
bodii_91 said:
no it is not a SIM problem, i have the same problem, i did a backup for the previous rom but there is no network signal at all.
it would be great if anybody will help.
thanks in advance.
Click to expand...
Click to collapse
When you say you get no signal can you search for and find networks, only not connect? (That's my story)
hendry said:
try downgrade your modem..
Click to expand...
Click to collapse
To what version, which file and how? Like I mentioned in my last post, I've gone back to absolute factory settings and now my phone counts as unrooted. I'm thinking of just sending it to samsung. I assume they'll fix the issue if I pay them?
After looking into the issue some more it seems my IMEI has been wiped. Not sure if there's anyway out of that one...

[Q] Data connection problem after rooting

Like the title says,
I'm not sure if its my telco that is causing this problem or my device.
it loses connections and says 'service disabled' for like 1 second and then it reconnects by itself.
I'm really new to rooting and modding as i just moved from an iphone to an android device this year for less than a month ago, but i've done researches before i rooted my phone.
Is this problem caused by rooting my phone or my telco?
Considering that i live on the 26th floor of the apartment and connection is really weak (i get about 1 to 3 bars of connection which is normal)
and i've never really encountered this problem before rooting my phone.
Root would not cause the problem.
Have you flashed some custom ROM?
DelBoy said:
Root would not cause the problem.
Have you flashed some custom ROM?
Click to expand...
Click to collapse
i might have i'm not really sure. is there a way to check if i've flashed a custom ROM?
i tried to flash CM12 earlier on but instead i accidentally flashed something else instead. but i dont see any changes in my phone other than the connection problem
I'm still picking up on this modding and rooting stuffs for android, so if i appear to be such a noob i'm sorry
Which ROM would you like?
What phone variant you have?
You can download some ROM and flash it through recovery.
Download it from here, but make sure it is for your variant.
http://forum.xda-developers.com/lg-g3/development
DelBoy said:
Which ROM would you like?
What phone variant you have?
You can download some ROM and flash it through recovery.
Download it from here, but make sure it is for your variant.
http://forum.xda-developers.com/lg-g3/development
Click to expand...
Click to collapse
I think i've installed a ROM that is causing my data connection problem.
Am i able to go back to stock?
EDIT: Alright i've solved my problem. Althought i couldnt find which file/ROM was affecting my data connection so i decided to do the hard way. Which is unroot my phone and then root it again.
So its fine now?

"No service"

Hello
I have LG G3 the international version with installed stock rom 5.0,
Before I install it, I backed up the previous kitkat rom.. When I installed the lollipop stock rom I decided to go back to my previous kitkat rom. After restoring it and booted it everything was ok but it says no service, emergency calls only. And the signal at the status bar was refreshing every second automatically. I tried to return to that lollipop rom to see whether the signal is ok or no but there was no problem with it. But I dont know whats the probkem in that kitkat rom.... Plzzzz helpppp mee!!
I have the same problem! I used a custom lollipop rom and messed with something so I had to restore the stock Kitkat.
Now it keeps searching for the signal and says "no service" It found the signal for a few times but lost it immidiately.. Wifi works fine.
i would be rly thankful if somebody can fix this.
Jatiska said:
I have the same problem! I used a custom lollipop rom and messed with something so I had to restore the stock Kitkat.
Now it keeps searching for the signal and says "no service" It found the signal for a few times but lost it immidiately.. Wifi works fine.
i would be rly thankful if somebody can fix this.
Click to expand...
Click to collapse
Flash suitable Kitkat modem for phone.
Im having the same issue i purchased a used G3 and it says " NO service" ive tried eveything and verified with sprint there is no block on the phone. got a new sim card from TING ... the phone will activate only over WIFI but i have never been able to get cell service Is this a hardware issue? im totally lost and TING is telling me to take it to a cell phone repair shop. ( i repair phones myself actually as part of my job but never run into this)
Ive flashed back to stock from via XDA instructions
Any help would be awesome!!
Thanks
I have found a lot of threads and people reporting this issue. Bought a D855 32Gb from China that has this problem...
Phone tries to get signal a couple of seconds and then a cross.. and so on..
I tried everything I think, I passed for all the bricks the phone can do: Automatic Reboot / Boot Loop / Fast Boot / Security Error / Factory Reset Status 2 / Dead (QHSUSB_DLOAD) - I can help anyone that has any of those problems : )
In one of the flashes my phone turned to D855RE, similar case to other people, also the message "Current version is not available for user. Can't find matched cust for NT-Code mcc/mnc".
Please if anyone was able to fix the problem report here, there is a lot of people waiting for the answer 20 threads in different networks, I will post the solution in each of those. Thanks!
Same happening with me,
I have LG G3 T-Mobile version, it keeps searching the service, sometimes it finds when there is very good signal, or when I am too close to the GSM antenna, I was thinking maiby there is problem with antenna contact, I have opened cleaned, but with no success. When is has service it does everything, calling, sms, 4G.
any help with this issue?
satrowii said:
Hello
I have LG G3 the international version with installed stock rom 5.0,
Before I install it, I backed up the previous kitkat rom.. When I installed the lollipop stock rom I decided to go back to my previous kitkat rom. After restoring it and booted it everything was ok but it says no service, emergency calls only. And the signal at the status bar was refreshing every second automatically. I tried to return to that lollipop rom to see whether the signal is ok or no but there was no problem with it. But I dont know whats the probkem in that kitkat rom.... Plzzzz helpppp mee!!
Click to expand...
Click to collapse
Get the modem from here for your firmware version (mine is 10M) and flash in custom recovery,i had the same problem after downgrading,all will be good
http://forum.xda-developers.com/lg-g3/general/radio-modem-lg-g3-t3110376
still no luck with modem/radio change
ludoke said:
Get the modem from here for your firmware version (mine is 10M) and flash in custom recovery,i had the same problem after downgrading,all will be good
http://forum.xda-developers.com/lg-g3/general/radio-modem-lg-g3-t3110376
Click to expand...
Click to collapse
HI. i tried to change to several radio but I still don't have a signal. I just can't find the thread from other site, that it could be a D850 not an D855 motherboard. He tried to change the ROM to D850 and finally got a signal.
I have the same problem, any help is welcomed.
PacMaNNNN said:
I have the same problem, any help is welcomed.
Click to expand...
Click to collapse
If you can, return the phone. As previous post suggested, its a popular thing from some chinese sellers to change the model. You will see the original model in your motherboard (you have to disassemble the phone) and have to flash the proper stock image. First confirm that the model is the model you ordered.
juanmazake said:
If you can, return the phone. As previous post suggested, its a popular thing from some chinese sellers to change the model. You will see the original model in your motherboard (you have to disassemble the phone) and have to flash the proper stock image. First confirm that the model is the model you ordered.
Click to expand...
Click to collapse
The phone was okay, this started happening when I flashed stock Marshmallow, then I flashed MIUI KitKat rom to see if its the the marshmallow that does that only, but it was on MIUI as well, after that I flashed Fulmics, but still the same. Now I'm on stock Marshmallow and it's doing it as well. I found a little "thing", when you set the network type to WCDMA/GSM there is no more no service, everything works. But when you put LTE it goes down.
If you suspect this can be the case of model tempering by seller, open your phone and unscrew the upper plastic cover, at the right you will see the Motherboard factory code with the phone model in it. Youll have to flash an according complete stock with flash tool.
juanmazake said:
If you suspect this can be the case of model tempering by seller, open your phone and unscrew the upper plastic cover, at the right you will see the Motherboard factory code with the phone model in it. Youll have to flash an according complete stock with flash tool.
Click to expand...
Click to collapse
and from where i can find japanese version of lg g3 sock firmware?

[Q] OTA Weirdness - Tab Pro 10.1

Got a notice of an OTA last night. Figured it was for Lollipop so told it to proceed. Once the tablet rebooted the WiFi radio was disabled. Looked in settings which showed that WiFi was on, but no radio. Went online an saw that Samsung hasn't sent out the Lollipop update for the 10.1.
Question 1 - how do I restore my tablet since I can't get WiFi turned on?
Question 2 - where did this weird OTA come from?
Thanks for any help you can give.
Mike
mikethevol said:
Got a notice of an OTA last night. Figured it was for Lollipop so told it to proceed. Once the tablet rebooted the WiFi radio was disabled. Looked in settings which showed that WiFi was on, but no radio. Went online an saw that Samsung hasn't sent out the Lollipop update for the 10.1.
Question 1 - how do I restore my tablet since I can't get WiFi turned on?
Question 2 - where did this weird OTA come from?
Thanks for any help you can give.
Mike
Click to expand...
Click to collapse
Firmware for SM-T520 http://www.sammobile.com/firmwares/database/SM-T520/ select your country and download.
Instructions
Extract (unzip) the firmware file
Download Odin v3.10.6
Extract Odin ZIP file
Open Odin v.3.10.6
Reboot Phone in Download Mode (press and hold Home + Power + Volume Down buttons)
Connect phone and wait until you get a blue sign in Odin
Add the firmware file to AP / PDA
Make sure re-partition is NOT ticked
Click the start button, sit back and wait few minutes
Others having same issue
Thought I'd post this as info. Checked over at Android Central and several people appear to be having the same issue. Looks like bad firmware from Samsung. Bad build number is: KOT49H.T520UEUAOD1. Wiping and factory refresh may help temporarily, but eventually the wifi radio will be disabled. I'm going to wait for Samsung to get their act together and flash a fresh build when it's released.
Thanks for the help.
Mike
My 10.1 Tab Pro was updated too but wifi is working fine. I'm not rooted though. Same build number that you mentioned.
Sent from my SM-T520 using XDA Premium HD app
Wifi Issue as well
I had the same update come across last night and now I can't connect to wi-fi to save my life. Really pissed off. Done 2 factory resets already, reset my modem at home, turns out it happens everywhere and not just at home. Wifi says it's on but doesn't pick up any networks in my area and won't connect to the 1 that is already known on my tab. PLEASE HELP
Got the update last week. Wifi is fine but now daily I get a random reboot. Never had any problems before. Thanks Sammy!
Bad Firmware
mikethevol said:
Thought I'd post this as info. Checked over at Android Central and several people appear to be having the same issue. Looks like bad firmware from Samsung. Bad build number is: KOT49H.T520UEUAOD1. Wiping and factory refresh may help temporarily, but eventually the wifi radio will be disabled. I'm going to wait for Samsung to get their act together and flash a fresh build when it's released.
Thanks for the help.
Mike
Click to expand...
Click to collapse
I have the same issue with the build described.
Does one know how to correct this firmware update if the tablet is unable to connect to the internet?
AndroidSMT520 said:
I have the same issue with the build described.
Does one know how to correct this firmware update if the tablet is unable to connect to the internet?
Click to expand...
Click to collapse
You can download an earlier firmware from sammobile.com. If you are in the US, use the firmware for cellular South and make sure it's a 4.4.2 that you are downloading. After you download it, you can flash it with Odin. There are several threads here on xda that describe this process. If you still need further help, post again.
TabPro 10.1 SM-T520, v4.4.2 Build KOT49H.T520UEUAOD1 No wifi after update
Boy am I glad to find you guys with the same problem as I have. Couple of days ago I saw an update message and decited to go for it. Well, as all of you know, wifi stops working. Factory resets gets it working again but once everything is restored it stops working again! This is quite frustrating and I hope Samsung is working on a fix right now. I haven't been on XDA for a while and only rooted phones before. So how is the rooting/mod scene for tablets. Any good Custom Roms out there we can use until/when this is resolved? I'm good with directions and done some custom roms on my phones before. Let me know what's the good ROMS out there are...the bloatfree version is a welcome even without KNOX, I don't really use it.
k8108 said:
You can download an earlier firmware from sammobile.com. If you are in the US, use the firmware for cellular South and make sure it's a 4.4.2 that you are downloading. After you download it, you can flash it with Odin. There are several threads here on xda that describe this process. If you still need further help, post again.
Click to expand...
Click to collapse
Thanks for your feedback.
I had to use the firmware from November 2014 to get it to work and restore my wi-fi.
Again thanks
KOT49H.T520UEUAOD1 is the problem
Well I figure this particular firmware has a problem. Because even after factory reset, wifi works once and goes back to not working. So the best solution is to get an earlier version. I went back to Sep 15, 2014 version and it works well. Took forever to download from sammobile though. So if you need to flash to a previous version that works. I have post a link to the firmware I have on my OneDrive that got it working again, hopefully it will be faster for you to get your tablet working again. Here is a link. This is for the US Tab Pro 10.1 SM-T520.
T520UEUANI1_T520XARANI1_XAR.zip
https://onedrive.live.com/redir?resid=a628a551d04c1283!721&authkey=!ALKYL7IcLyekSgg&ithint=file,zip
thank you for those who warned about the wifi problems this OTA introduced. I'm just going to keep ignoring the tablets request to update. I thought i got a great deal on this tablet when i got a refurbished one for under $300 several months ago... but samsungs lack of support for this tablet is astonishing.
nxp3 said:
Boy am I glad to find you guys with the same problem as I have. Couple of days ago I saw an update message and decited to go for it. Well, as all of you know, wifi stops working. Factory resets gets it working again but once everything is restored it stops working again! This is quite frustrating and I hope Samsung is working on a fix right now. I haven't been on XDA for a while and only rooted phones before. So how is the rooting/mod scene for tablets. Any good Custom Roms out there we can use until/when this is resolved? I'm good with directions and done some custom roms on my phones before. Let me know what's the good ROMS out there are...the bloatfree version is a welcome even without KNOX, I don't really use it.
Click to expand...
Click to collapse
i'm being prompted to install a 83.54 mb update, i dont know if its the bad OTA you list or if its a new one. Anyone have any idea what it is?

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