Problem phone only working in gsm only?? - Galaxy S5 Mini Q&A, Help & Troubleshooting

Hello developers.
I am amz. In dire need of your help.
Ok so i have a new mini
I turned it on n it would jus turn off if I used apps. I got a new battery. That stopped.
I then try use Internet it works only on G and E but if I go to 3g or Lte. .H will never come on. Can't call it says not registered on network only on the higher bands not gsm.. It's a 4G sim it works perfectly in my old s5 mini and signal is excellent here. I got new Internet settings too. G n E works why the he'll doesny the other bands register on network? Imei shows its not blocked either. I'm in the UK on EE. I cannot understand. I have all the OTA updates. Can u tell me if I can fix it by doing something thro service menus or anything also all sims do the same in this phone. I don't have a pc to change the rom. Could I do it through a external SD card.
Please I beg of you help.

Run the system updates, I had network issues until it was fully updated.
They are only patches, no new rom.
Reboot once each batch has completed until there are no more.
If that does not work, potentially you have a row version which uses a different band than us in the uk. Send it back.

I have the June 2015 update. I ran all updates. Still not working? I wanna install the cm12 rom m see if that'll fix it but kingroot not working. How do I see what band my phone is tryna connect in wcdma mode n what is required by the network? 4g don't work either?

I just Checked. My networked EE uses wcdma on 2100mhz. My phone is trying to connect. But it just says emerge calls only. Wth. What's wrong with it??

Can you post a screen of the About phone?
Should look identical to mine

Also, have you tried googling ee 4g settings s5 mini?
My network required me to get a 4g sim upgrade, before that it needed settings for hspda 3g which worked

I have a similar problem. Phone worked fine for couple of months, but since tuesday, it only works when I force it to GSM only.
G800FXXU1AOG2, nordic
(the thumbnail above equals to mine)

Maybe the network providers have changed 3g/4g details.
Check the website for correct details and update them in phone, if that doesn't work try a friends sim, if that doesn't work return phone

I had the problem aswell. I searched for the newest firmware in the internet (in my case I used the russian one). Then I extracted the modem file and made a tar file of it to flash it through odin. After I've done it everything worked fine.
If you want me to, I can do this tomorrow or saturday for u.

I flashed the original firmware (July 10, Nee), that did not help. What is the date of your firmware that works now?

I thinky june 2015.. I had the problem in February last year

It's me amz
Ok so basically I found out I need to flash my modem file or change the rom. But I have no PC to flash
.so I need a app which can root my phone or something without a computer. Kingroot didn't work. Anyone got any ideas on how I can do this? I've Google relentlessly. I need a developers help lol
I'll even pay them

Flacid Monkey said:
Maybe the network providers have changed 3g/4g details.
Check the website for correct details and update them in phone, if that doesn't work try a friends sim, if that doesn't work return phone
Click to expand...
Click to collapse
I returned my phone and they changed the "circuit board". So mine was a hardware problem.

I've rooted my phone and going to change my rom however the tar.md5 file I can't use as I can.tell use odin. I need the .img file to have the twrp bootloader. anyone know where I can download this?

Related

[Q] Galaxy S Plus not connecting to GSM network

Hi
One of my friends phone ( Galaxy S Plus ) having a very weak access to GSM network and at his home, it doesn't see any GSM network where as his iphone works fine.
Any solution to fix this issue. Is there any way to update the modem file , the device is still on stock 2.3.3. Will upgrading it to latest firmware 2.3.6 from sammobile.com will fix the issue.
Thank for the help.
First try to update via KIES.
If that doesnt work correctly see the link underneath my sig.
About the issue it may work but im not certain
srbutt said:
Hi
One of my friends phone ( Galaxy S Plus ) having a very weak access to GSM network and at his home, it doesn't see any GSM network where as his iphone works fine.
Any solution to fix this issue. Is there any way to update the modem file , the device is still on stock 2.3.3. Will upgrading it to latest firmware 2.3.6 from sammobile.com will fix the issue.
Thank for the help.
Click to expand...
Click to collapse
Hai =)
You should first check your APN, thats where your mobile data en GSM network is connected with. You can find your APN data mostly at your providers site.
Cheers
killerzone26 said:
Hai =)
You should first check your APN, thats where your mobile data en GSM network is connected with. You can find your APN data mostly at your providers site.
Cheers
Click to expand...
Click to collapse
Its not about connecting to the GSM for data service, i am talking about just the network for normal calls and SMS, the device is not connecting to the provider network.
Secondly where can I get the modem files for this device and what is the process to update the modem file only. Does the firmware files downloaded from sammobile has the modem files built-in too ?

no more GSM signal

Hi all,
i have stock JB rom with Mentor's rom and it worked great but no now
i have tested official cm 10.2.1 with the patch for GSM but no signal
reverted back to stock but still no signal
i seems the phone has sim problem cause my sim in another phone work fine
i have sucessed to make the phone work but i am on EDGE only never HSDPA
no more gsm
magikstar said:
i have sucessed to make the phone work but i am on EDGE only never HSDPA
Click to expand...
Click to collapse
Hello,
Did you got it working ?
Many people in Austria have since mid of July problems with the Droid 4 GSM.
I used the Original JB ROM with Mentor, but since mid of July it didnt found any GSM signal anymore.
Now I have installed CM11, GSM and Internet works,
but the GSM works only with 2G and the Internet only with EDGE mode anymore.
Did you found maybe already a solution to get it fully working again ?
We cant find any solution...if you know something, let me know please.
regards
I can try to helping you but you should answer to these questions:
Did you do some change before to not having anymore gsm signal?
What is your stock rom version?
With the original stock rom without any modification what is the situation?
Could you try the original stock rom without my gsm rom but with my latest gsm patch?
lzmichael said:
Hello,
Did you got it working ?
Many people in Austria have since mid of July problems with the Droid 4 GSM.
I used the Original JB ROM with Mentor, but since mid of July it didnt found any GSM signal anymore.
Now I have installed CM11, GSM and Internet works,
but the GSM works only with 2G and the Internet only with EDGE mode anymore.
Did you found maybe already a solution to get it fully working again ?
We cant find any solution...if you know something, let me know please.
regards
Click to expand...
Click to collapse
i have entirely reflash stock rom via fastboot all the .img and then mentor's rom and it work,i have H signal back
lzmichael said:
Hello,
Did you got it working ?
Many people in Austria have since mid of July problems with the Droid 4 GSM.
I used the Original JB ROM with Mentor, but since mid of July it didnt found any GSM signal anymore.
Now I have installed CM11, GSM and Internet works,
but the GSM works only with 2G and the Internet only with EDGE mode anymore.
Did you found maybe already a solution to get it fully working again ?
We cant find any solution...if you know something, let me know please.
regards
Click to expand...
Click to collapse
I'm in Austria too (provider yesss) and i'm facing the same issue. I already did an full wipe, went back to stock, rooted, installed safestrap again und finally slimkat 7.0 with the gsm patch. Still i just get an edge connection but whenever the droid tries to connect to umts, the signal gets lost totally (no service).
magikstar said:
i have entirely reflash stock rom via fastboot all the .img and then mentor's rom and it work,i have H signal back
Click to expand...
Click to collapse
@Mentor.37
i did not any changes - it didnt worked anymore from one minute to the other
i used the Original JB ROM with the Mentor ROM (i cant remember the exactly ROM Version, but it was the official Stock from Verizon/Motorola)
With the original Stock ROM i dont get any connection (no telephony and no internet) - also not any 2G connection...
With the Original Stock ROM and Mentor ROM its the same....no connection (no telephony and no internet).
I flashed CM11 and there i got a connection, but the connection is only 2G (telephony and the internet works only with 2G mode) - no 3G mode.
I also flashed the "Original Motorola Image" back, but there i didnt got also any connection
I used some "Moto XT894 Utility" which i found here in the forum - but always the same - no connection. The "Moto XT894 Utility" contained the Original JB ROM.
@magikstar which Tool you exactly used for flashing back the Original Image ? Can you send me maybe the download links ?
Maybe you have used another tool for flashing back than i.
As Provider i use: A1 (Telekom Austria)
many other people in Austria have the same problem....
@lzmichael
My provider is YESS!!, which belongs to A1 and therefore I'm in the A1 network too. Seems like an A1 issue, because a friend of mine (he has a droid4 too) has Drei, and does not have a problem with 3G.
lzmichael said:
@Mentor.37
i did not any changes - it didnt worked anymore from one minute to the other
i used the Original JB ROM with the Mentor ROM (i cant remember the exactly ROM Version, but it was the official Stock from Verizon/Motorola)
With the original Stock ROM i dont get any connection (no telephony and no internet) - also not any 2G connection...
With the Original Stock ROM and Mentor ROM its the same....no connection (no telephony and no internet).
I flashed CM11 and there i got a connection, but the connection is only 2G (telephony and the internet works only with 2G mode) - no 3G mode.
I also flashed the "Original Motorola Image" back, but there i didnt got also any connection
I used some "Moto XT894 Utility" which i found here in the forum - but always the same - no connection. The "Moto XT894 Utility" contained the Original JB ROM.
@magikstar which Tool you exactly used for flashing back the Original Image ? Can you send me maybe the download links ?
Maybe you have used another tool for flashing back than i.
As Provider i use: A1 (Telekom Austria)
many other people in Austria have the same problem....
Click to expand...
Click to collapse
go to http://sbf.droid-developers.org/phone.php?device=11 and download the latest firmware Android 4.1.2 Blur_Version.98.72.188.XT894.Verizon.en.US
then unzip it and boot your phone into bootloader
flash via fastboot the boot.img,emstorage.img,preinstall.img,radio.img,re covery.img,system.img
and reboot your device and finally mentor's rom wia safestrap
not working
thanks, i did that....but it still works only with 2G mode
with 3G it didnt connect (no network)
what can i do ?
You could try installing the stock 18-9 version, if i'm not in error in it there has been some little update in the radio for gsm users in the canada and that could help every gsm user.
infabo said:
I'm in Austria too (provider yesss) and i'm facing the same issue. I already did an full wipe, went back to stock, rooted, installed safestrap again und finally slimkat 7.0 with the gsm patch. Still i just get an edge connection but whenever the droid tries to connect to umts, the signal gets lost totally (no service).
Click to expand...
Click to collapse
What is the version of gsm patch that you installed? Did you tried the latest version?
lzmichael said:
@Mentor.37
i did not any changes - it didnt worked anymore from one minute to the other
i used the Original JB ROM with the Mentor ROM (i cant remember the exactly ROM Version, but it was the official Stock from Verizon/Motorola)
With the original Stock ROM i dont get any connection (no telephony and no internet) - also not any 2G connection...
With the Original Stock ROM and Mentor ROM its the same....no connection (no telephony and no internet).
I flashed CM11 and there i got a connection, but the connection is only 2G (telephony and the internet works only with 2G mode) - no 3G mode.
I also flashed the "Original Motorola Image" back, but there i didnt got also any connection
I used some "Moto XT894 Utility" which i found here in the forum - but always the same - no connection. The "Moto XT894 Utility" contained the Original JB ROM.
Click to expand...
Click to collapse
So you do not have any connection with stock rom and with stock rom with my rom?
In the cm11 what is the version of the gsm patch that you installed?
lzmichael said:
thanks, i did that....but it still works only with 2G mode
with 3G it didnt connect (no network)
what can i do ?
Click to expand...
Click to collapse
In what rom you have only 2g connection?
Appowei and
Mentor.37 said:
You could try installing the stock 18-9 version, if i'm not in error in it there has been some little update in the radio for gsm users in the canada and that could help avery gsm user.
What is the version of gsm patch that you installed? Did you tried the latest version?
So you do not have any connection with stock rom and with stock rom with my rom?
In the cm11 what is the version of the gsm patch that you installed?
In what rom you have only 2g connection?
Click to expand...
Click to collapse
I dont have installed a GSM Patch (i never had that installed before), but i can try.
Today i have installed:
VRZ_XT894_9.8.2O-72_VZW-18-8_CFC.xml.zip
and the MentorRom (Version from March 2014).
With that i have 2G connection. 3G didnt work.
The same problem was with the CM11 - only 2G worked
Where i can get the 18.9 Version from the Stock-ROM?
If you are using my rom you do not have to install the gsm patch but if you are using any other aosp rom you have to install my gsm patch.
Now for testing you can try installing my latest gsm patch, in it i made some change that i have not yet merged in my gsm rom, if no luck you can try updating to 18-9 in this way:
- install the 18-2 version, here the download
- from ota you should update to 18-9
- now you can try the stock rom without any mod and with my patch
if these things will not help we will try in another way.
Mentor.37 said:
What is the version of gsm patch that you installed? Did you tried the latest version?
Click to expand...
Click to collapse
slimkat 7 and your GSM patch v3.2.2.
gsm
Mentor.37 said:
If you are using my rom you do not have to install the gsm patch but if you are using any other aosp rom you have to install my gsm patch.
Now for testing you can try installing my latest gsm patch, in it i made some change that i have not yet merged in my gsm rom, if no luck you can try updating to 18-9 in this way:
- install the 18-2 version,the download
- from ota you should update to 18-9
- now you can try the stock rom without any mod and with my patch
if these things will not help we will try in another way.
Click to expand...
Click to collapse
I have installed now the latest GSM Patch (v3.2.2), but it still doesnt work with 3G mode (no internet connection and no telephony with 3G)
...if i switch to 2G it works
(for example: with a Drei Austria sim card the phone works fine - and with T-Mobile Austria is the same problem as with A1).
I will try to install that 18-2 Update later, when i have a fast WLAN connection to get the OTA update (to 18-9) quickly...
---------- Post added at 05:18 PM ---------- Previous post was at 05:13 PM ----------
im wondering that that problem only appears in austria. since mid of july...much people have problems
There is something that your provider changed and that that caused this, I hope that we will solve the problem but with our locked bootloader this will be really hard.
Have you tried contacting your providers to knowing what's happening?
Anyway if after updating to 18-9 the problem will be yet present you can attach here your logcats when you are in 3g with no service.
gsm
Mentor.37 said:
There is something that your provider changed and that that caused this, I hope that we will solve the problem but with our locked bootloader this will be really hard.
Have you tried contacting your providers to knowing what's happening?
Anyway if after updating to 18-9 the problem will be yet present you can attach here your logcats when you are in 3g with no service.
Click to expand...
Click to collapse
Yes, i have contacted the provider in July and have asked what i can do. i have then asked if they had changed something - like APNs or so, and the provider said, that they didnt changed anything. they replaced then my simcard - they thought maybe is the simcard defect, but the simcard was ok, anyway i have now a new simcard.
but the phone-support from the provider didnt know if something "internal" got changed at the provider...thats what i think.
After flashing the stockrom (with mentor addon), i got a 3G signal for 30-50 seconds, then the signal was away.
the same thing was end of july, after flashing the stockrom (there i had some older version flashed), i got a 3G signal for few seconds - then never again.
no 3G signal after rebooting and so again - it worked only short after installing the new rom.
How its possible to get that "logcats" ? I never did that before. In which directory or so on the phone are the logs ?.
Pretty interesting the output of the log.
I'm writing from my droid so a full log may be diffult now.
08-11 07:57:11.326 D/MobileDataStateTracker(237): cbs: Broadcast received: android.intent.action.ANY_DATA_STATE apnType=cbs
08-11 07:57:11.334 D/MobileDataStateTracker(237): cbs: Received state=DISCONNECTED, old=DISCONNECTED, reason=dataDetached
08-11 07:57:11.396 D/Nat464Xlat(237): requiresClat: netType=0, hasIPv4Address=true
After the last line appears, the cell connection drops.
When i am on gsm only, netType equals to 5.
lzmichael said:
Yes, i have contacted the provider in July and have asked what i can do. i have then asked if they had changed something - like APNs or so, and the provider said, that they didnt changed anything. they replaced then my simcard - they thought maybe is the simcard defect, but the simcard was ok, anyway i have now a new simcard.
but the phone-support from the provider didnt know if something "internal" got changed at the provider...thats what i think.
After flashing the stockrom (with mentor addon), i got a 3G signal for 30-50 seconds, then the signal was away.
the same thing was end of july, after flashing the stockrom (there i had some older version flashed), i got a 3G signal for few seconds - then never again.
no 3G signal after rebooting and so again - it worked only short after installing the new rom.
How its possible to get that "logcats" ? I never did that before. In which directory or so on the phone are the logs ?.
Click to expand...
Click to collapse
With adb:
Code:
adb logcat -b radio
or with the app Catlog.
infabo said:
Pretty interesting the output of the log.
I'm writing from my droid so a full log may be diffult now.
08-11 07:57:11.326 D/MobileDataStateTracker(237): cbs: Broadcast received: android.intent.action.ANY_DATA_STATE apnType=cbs
08-11 07:57:11.334 D/MobileDataStateTracker(237): cbs: Received state=DISCONNECTED, old=DISCONNECTED, reason=dataDetached
08-11 07:57:11.396 D/Nat464Xlat(237): requiresClat: netType=0, hasIPv4Address=true
After the last line appears, the cell connection drops.
When i am on gsm only, netType equals to 5.
Click to expand...
Click to collapse
I need the all log, if you are using Catlog there should be the radio option.
Mentor.37 said:
With adb:
Code:
adb logcat -b radio
or with the app Catlog.
I need the all log, if you are using Catlog there should be the radio option.
Click to expand...
Click to collapse
I cleared the log before I captured the radio log. At the beginning I had an established 2G (GSM only) connection. Then I switched to "GSM auto(PRL)" - the connection dropped and finally I went back to "GSM only" again. Just fyi what I was doing when the log was captured.

LG G2 VS980 not detecting/connecting to mobile network..

isnt the VS980 supposed to be unlocked for GSM use ?
I am in India at the moment...i have 3 Verizon G2 phones...SIM cards work fine on 2 of them...On the third one...it does not detect the mobile network...sim is detected ,coz it gives no alert...and when i search for networks...the networks are shown...it just doesnt connect to the network...the sim cards work fine in other phones...in the other G2 phones and in a HTC DROID DNA...so its not the sim at fault....
Have tried multiple SIM cards from Vodafone/Loop Mobile/Airtel...none of them work on this particular phone..
When i search for networks...im getting networks...but cant connect to them...most times it shows error while searching for network...
What can be the problem ?
Please help me out...otherwise will have to send the phone all the way back to USA...
if i am right... verizon phone is unlocked to all US carriers only....try to verify if its globally unlocked
EDGE/GSM (850/900/1800/1900), HSPA/UMTS (850/900/1900/2100)*
those are the frequence bands it support.
India support 900 1800
So technically it should work..
try *#06# to check if it shows imei number and other is to try to unlock phone
prateeksahoo said:
isnt the VS980 supposed to be unlocked for GSM use ?
I am in India at the moment...i have 3 Verizon G2 phones...SIM cards work fine on 2 of them...On the third one...it does not detect the mobile network...sim is detected ,coz it gives no alert...and when i search for networks...the networks are shown...it just doesnt connect to the network...the sim cards work fine in other phones...in the other G2 phones and in a HTC DROID DNA...so its not the sim at fault....
Have tried multiple SIM cards from Vodafone/Loop Mobile/Airtel...none of them work on this particular phone..
When i search for networks...im getting networks...but cant connect to them...most times it shows error while searching for network...
What can be the problem ?
Please help me out...otherwise will have to send the phone all the way back to USA...
Click to expand...
Click to collapse
---------- Post added at 04:47 AM ---------- Previous post was at 04:36 AM ----------
just to prove my words...heres the link... its unlocked just for US carriers.
http://www.androidcentral.com/verizon-s-lg-g2-unlocked-att-and-t-mobile-hspa
try to unlock in india with IMEI
neerajverma04 said:
if i am right... verizon phone is unlocked to all US carriers only....try to verify if its globally unlocked
EDGE/GSM (850/900/1800/1900), HSPA/UMTS (850/900/1900/2100)*
those are the frequence bands it support.
India support9001800
So technically it should work..
try *#06# to check if it shows imei number and other is to try to unlock phone
---------- Post added at 04:47 AM ---------- Previous post was at 04:36 AM ----------
just to prove my words...heres the link... its unlocked just for US carriers.
http://www.androidcentral.com/verizon-s-lg-g2-unlocked-att-and-t-mobile-hspa
try to unlock in india with IMEI
Click to expand...
Click to collapse
I got 3 Verizon g2... 2 of them work fine with Indian sim cards.
The third one is facing this problem.. I thought the IMEI was lost.. But IMEI is still intact and dame as that on the box.. Also Verizon g2 has no unlocking system as it is already unlocked..
That ink which u posted says it is unlocked for us carriers.. And not that it cannot be used outside the US.. People use it in UK, Australia.. Mexico.. Germany.. To name a few..
It seems the efs partition is corrupt but I don't know how to fix that as I have no backup..
Also if it wasent unlocked the sim won't be detected.
When I search for networks, the networks show.. It just doesn't connect..
The problem exists only in one of the 3 phones..
Ok then install custom rom and try with that.
I can recommend you for cloudy g3 rom. Best one out there
If your phone is not rooted and no custom recovery then open towelroot.com from your phone and install apk and it will root right a way
Then install rashr flash tool from play Market and install twrp recovery.
It's the easiest methods to install custom recovery and root I can recommend.
I hope this will work for you and don't forget to setup apn setting if data plan not working
neerajverma04 said:
Ok then install custom rom and try with that.
I can recommend you for cloudy g3 rom. Best one out there
If your phone is not rooted and no custom recovery then open towelroot.com from your phone and install apk and it will root right a way
Then install rashr flash tool from play Market and install twrp recovery.
It's the easiest methods to install custom recovery and root I can recommend.
I hope this will work for you and don't forget to setup apn setting if data plan not working
Click to expand...
Click to collapse
Already tried that ,before posting here...not working...used cloudy...used towelroot,and autorec... when it doesnt connect to the network apn settings are useless...
prateeksahoo said:
Already tried that ,before posting here...not working...used cloudy...used towelroot,and autorec... when it doesnt connect to the network apn settings are useless...
Click to expand...
Click to collapse
I have a very similar problem. Using a SIM with 850 mhz HDSPA provider LG G2 works.
But when I use a SIM at 900 mhz, I got only voice. No 2G even.
Ideas?
javierarenas said:
I have a very similar problem. Using a SIM with 850 mhz HDSPA provider LG G2 works.
But when I use a SIM at 900 mhz, I got only voice. No 2G even.
Ideas?
Click to expand...
Click to collapse
In My case the same sim works on another vs980..but not on this one..
I have a useless music player now.
prateeksahoo said:
In My case the same sim works on another vs980..but not on this one..
I have a useless music player now.
Click to expand...
Click to collapse
Fixed for me. I rooted the phone. I installed the cloudy rom, based in the D802 version of LG G2, now, the phone works perfect. No issues at all.
I suggest change the rom and try other software.
javierarenas said:
Fixed for me. I rooted the phone. I installed the cloudy rom, based in the D802 version of LG G2, now, the phone works perfect. No issues at all.
I suggest change the rom and try other software.
Click to expand...
Click to collapse
I am on cloudy now,but while installing i selected vs980...should i select D802 while installing ?
Its already rooted.
prateeksahoo said:
I am on cloudy now,but while installing i selected vs980...should i select D802 while installing ?
Its already rooted.
Click to expand...
Click to collapse
does the phone have a big verizon logo in the back or in the screen? Then yes, it's a VS980. Pick that option in the aroma installer.
javierarenas said:
does the phone have a big verizon logo in the back or in the screen? Then yes, it's a VS980. Pick that option in the aroma installer.
Click to expand...
Click to collapse
I know mine is a VS980 and i have installed cloudy on my VS980...in aroma...nothing happened....
VS980 not picking LTE Frequency
I am from Pakistan and I have the same issue. Did anyone find any solution?
Ihave thisproblem too
I am using Verizon G2 32gb.. and yes... signal reception is so so soo poor.. at same locaiton, others handsets with same network are receiving very good signals while its on no network :/
Not picking any frequency or signal at all
Upgraded my VS980 to lolipop and after a couple of days same thing happened to me. I am in Pakistan btw. Sim is working fine on any other mobile. Have tried restoring to stock nothing happened. One thing i want to add is when i change my location sometimes for a couple of minutes, network do appear. But it does not makes call or uses data then it again gets to emergency calls only status... Phone is no better then i web browser now.... Help needed
Also not connecting (But it detects networks)
I have an lg vs980 and I was using it with H2O wireless and later I changed to Simple Mobile. I'm living in Puerto Rico. The phone was working all right and, suddenly, one day it was always displaying 'emergency calls only'.
I did factory reset, then I reflashed stock lollipop and it was like nothing happened, keeps displaying 'emergency calls only'.
Then I found this post http://forum.xda-developers.com/showthread.php?t=2394689 and applied the patch but didn't seem to resolve the problem.
As a last resort I tried flashing cm 12.1 and before first boot applied the patch from the cited thread but no result, keeps displaying 'emergency calls only'.
Has anyone found a solution to this problem?

How should I downgrade or enable GSM/WCDMA option on Sprint LG G4 LS991?

Hey, guys this is my first post here on XDA so please apologize me for any inconvenience.
I bought LG G4 Sprint i.e., LS991 yesterday from someone else I don't have contact with him now. The sim card which works on 3G was working fine when I bought it. But, then I tried to go in settings and then to mobile network and I opened the list of network bands and unfortunately I was only able to find only two option that are 1. CDMA/LTE and 2. CDMA.
I was forced to select one from it and boom no signals at all and status says searching for service. Where is the GSM option? I'm sure that this phone is already unlocked and it is from Sprint.
Also, I'm on the latest software version that is LS991ZVD. Can I go back to ZV6 International ROM or will it brick my device?!
emad26 said:
Hey, guys this is my first post here on XDA so please apologize me for any inconvenience.
I bought LG G4 Sprint i.e., LS991 yesterday from someone else I don't have contact with him now. The sim card which works on 3G was working fine when I bought it. But, then I tried to go in settings and then to mobile network and I opened the list of network bands and unfortunately I was only able to find only two option that are 1. CDMA/LTE and 2. CDMA.
I was forced to select one from it and boom no signals at all and status says searching for service. Where is the GSM option? I'm sure that this phone is already unlocked and it is from Sprint.
Also, I'm on the latest software version that is LS991ZVD. Can I go back to ZV6 International ROM or will it brick my device?!
Click to expand...
Click to collapse
Bro, I found this on this site:
1. go to settings and add new APN manually (fill the values according to your carrier).
2. in the APN type input "default,dun,fota".
3 .save.
4. Restart phone and you are good to go.
Works like a charm... The signal loss thing happened to me too. Don't select either option after you fix it. Go to backup and reset and reset your network settings. I think this is what I did to solve the problem.
emad26 said:
Hey, guys this is my first post here on XDA so please apologize me for any inconvenience.
I bought LG G4 Sprint i.e., LS991 yesterday from someone else I don't have contact with him now. The sim card which works on 3G was working fine when I bought it. But, then I tried to go in settings and then to mobile network and I opened the list of network bands and unfortunately I was only able to find only two option that are 1. CDMA/LTE and 2. CDMA.
I was forced to select one from it and boom no signals at all and status says searching for service. Where is the GSM option? I'm sure that this phone is already unlocked and it is from Sprint.
Also, I'm on the latest software version that is LS991ZVD. Can I go back to ZV6 International ROM or will it brick my device?!
Click to expand...
Click to collapse
you cannot downgrade has antirollback yuo will brick possibly hardbrick.
i dont know the method but i believe there is possibility even without root but dont quote me on tht
as mine has managed to stay on zv6 since day one

SOLVED: Full mobile 4G+ data signal, but no data comes through

Hi everyone
I have a strange problem. I bought the "International" version, which was of course the Tencent with a flashed ROM. Although it was sold as "International" hehe
I didn't have Google Pay working and I've flashed the 1703 together with fingerprint, re-locked it down after and then updated with the latest firmware from the Asus website. (Google Pay works now)
Version WW-16.0631.1908.21
I now see that even though I have a FULL 4G+ signal. Calls come through normally etc. but the internet on mobile data simply doesn't work.
Anybody have any advice what else I could do?
EDIT:
It was a simple APN problem
Mad_Duke said:
Hi everyone
I have a strange problem. I bought the "International" version, which was of course the Tencent with a flashed ROM. Although it was sold as "International" hehe
I didn't have Google Pay working and I've flashed the 1703 together with fingerprint, re-locked it down after and then updated with the latest firmware from the Asus website. (Google Pay works now)
Version WW-16.0631.1908.21
I now see that even though I have a FULL 4G+ signal. Calls come through normally etc. but the internet on mobile data simply doesn't work.
Anybody have any advice what else I could do?
EDIT:
It was a simple APN problem
Click to expand...
Click to collapse
Can you provide more details to the resolution? I'm closely watching this phone and would like to be aware of how to resolve these potential issues should I aslo encounter them. TIA
Mad_Duke said:
Hi everyone
I have a strange problem. I bought the "International" version, which was of course the Tencent with a flashed ROM. Although it was sold as "International" hehe
I didn't have Google Pay working and I've flashed the 1703 together with fingerprint, re-locked it down after and then updated with the latest firmware from the Asus website. (Google Pay works now)
Version WW-16.0631.1908.21
I now see that even though I have a FULL 4G+ signal. Calls come through normally etc. but the internet on mobile data simply doesn't work.
Anybody have any advice what else I could do?
EDIT:
It was a simple APN problem
Click to expand...
Click to collapse
OFF TOPIC but please let me know, i have WW rom installed, how do i use offical asus updates now? what do i do? please replay
NoBodysGamer said:
OFF TOPIC but please let me know, i have WW rom installed, how do i use offical asus updates now? what do i do? please replay
Click to expand...
Click to collapse
Don't wanna be toxic, but you have here plenty of topics how to get OTA, or what to do with your phone and u still need to ask? Keep looking >.<
CRYPTfromCATACOMBZ said:
Don't wanna be toxic, but you have here plenty of topics how to get OTA, or what to do with your phone and u still need to ask? Keep looking >.<
Click to expand...
Click to collapse
There are no topics on how to get OTA, i googled, all topics say its Impossible.
I want to know how he used offical update to update the phone, i just updated using one of the updates here in FASTBOOT mode.
If you know about topic that can enable REAL OTA that works or if you at least know how i can use ASUS offical updates to update [ mean i assume you just copy the zip file to the USB and it auto updates?]
Do tell me
Mad_Duke said:
Hi everyone
I have a strange problem. I bought the "International" version, which was of course the Tencent with a flashed ROM. Although it was sold as "International" hehe
I didn't have Google Pay working and I've flashed the 1703 together with fingerprint, re-locked it down after and then updated with the latest firmware from the Asus website. (Google Pay works now)
Version WW-16.0631.1908.21
I now see that even though I have a FULL 4G+ signal. Calls come through normally etc. but the internet on mobile data simply doesn't work.
Anybody have any advice what else I could do?
EDIT:
It was a simple APN problem
Click to expand...
Click to collapse
Wow, im have this issue too, so what happen with APN setting? Do you simply delete or make new one manually?
NoBodysGamer said:
There are no topics on how to get OTA, i googled, all topics say its Impossible.
I want to know how he used offical update to update the phone, i just updated using one of the updates here in FASTBOOT mode.
If you know about topic that can enable REAL OTA that works or if you at least know how i can use ASUS offical updates to update [ mean i assume you just copy the zip file to the USB and it auto updates?]
Do tell me
Click to expand...
Click to collapse
Idk how to turn on real OTA thing, but if u want update to official ROM (copy zip file to internal storage), make sure your fingerprint set to same with your ROM (ex: WW ROM with WW Fingerprint), that works with me
NoBodysGamer said:
OFF TOPIC but please let me know, i have WW rom installed, how do i use offical asus updates now? what do i do? please replay
Click to expand...
Click to collapse
lamboyholic said:
Wow, im have this issue too, so what happen with APN setting? Do you simply delete or make new one manually?
Click to expand...
Click to collapse
I just googled what my mobile phone carrier APN was and entered it instead of the wrong one.
You can find the one in the phone by simply going to settings > network and internet > mobile network -> APN ( Access Point Names )
I just started having this issue yesterday! Phone has been working great for over a month then all of a sudden 4g shows it's on and connected but no mobile data coming through! My APN is correct, and I'm using Straight Talk through the TMobile network... Still haven't been able to fix it.
Same issue here internet connection dropping
I wonder if T-Mobile is doing some "dry runs" before they officially light up their 5G network on December 6th. (src: https://www.t-mobile.com/coverage/4...d=WMM_TMO_P_19NETWRK5G_91WOGGGY1WERV94JC18747)
I am having same issue. Adding APN works for few hours. Then drops out. What to do? Did you guys find any solution?
Assalam alaykum
I suffered from dropping internet dropping connection
The solution was APN
Go to settings > network and internet > mobile network -> APN ( Access Point Names )
click the ( Access Point Names ) and you will find many APN setting Depend on your internet provider
Click one of them and then and on far top right option button click (delete APN)
Repeat this until you delete them all
Click the ( + ) sign to create new APN
Now go to thia site:
https://www.apnsettings.org/
And search for your country or internet provider
Copy the APN setting from the website to you your phone
Then save.
Hope it could help you
In case you couldn't connect to the internet at all
you can always restore your previous setting by :
Go to settings > network and internet > mobile network -> APN ( Access Point Names )
on far top right option button click (reset to default)

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