Galaxy S6 (SM - G920FD) Mobile Data Issue/Problem - Galaxy S6 Q&A, Help & Troubleshooting

Dear Senior Members and developers/experts,
I need your urgent help regarding the issue of mobile data that I am facing in recent days. Please see the pic as attached. My device info is also attached for your information. I am using Galaxy S6 DuOS and facing the mobile data problem. When I select GSM Only (2G) (Attachment 2), my mobile data is all right. Sim 2 selected GSM all time (Attachment 3) with no problem. I am using mobile data from Sim 1. When I select WCDMA/GSM (3G/2G), my mobile data HSUPA showing connected but no internet connection and emergency calls only appears (Attachment 4). And lastly UMTS and mobile network state disconnected (Attachment 5). Please note that my IMEI 2 is not valid according to IMIE.info and mobile info application. I have the mobile data available when I purchased but after OTA update, this problem occurs. THen I flash sam firmware but no improvement. Any solution regarding this will be appreciable. Thanks.

rony0505 said:
Dear Senior Members and developers/experts,
I need your urgent help regarding the issue of mobile data that I am facing in recent days. Please see the pic as attached. My device info is also attached for your information. I am using Galaxy S6 DuOS and facing the mobile data problem. When I select GSM Only (2G) (Attachment 2), my mobile data is all right. Sim 2 selected GSM all time (Attachment 3) with no problem. I am using mobile data from Sim 1. When I select WCDMA/GSM (3G/2G), my mobile data HSUPA showing connected but no internet connection and emergency calls only appears (Attachment 4). And lastly UMTS and mobile network state disconnected (Attachment 5). Please note that my IMEI 2 is not valid according to IMIE.info and mobile info application. I have the mobile data available when I purchased but after OTA update, this problem occurs. THen I flash sam firmware but no improvement. Any solution regarding this will be appreciable. Thanks.
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67 VIEWS without any REPLY

My friend try many fw maybe flashing fw will solve ur problems if not then service center or samsung shop they should fix it ok
Sent from my SM-G925F using Tapatalk

Try going to recovery mode and wipe cache. You can also do a full reset if it does not work.

rony0505 said:
Dear Senior Members and developers/experts,
I need your urgent help regarding the issue of mobile data that I am facing in recent days. Please see the pic as attached. My device info is also attached for your information. I am using Galaxy S6 DuOS and facing the mobile data problem. When I select GSM Only (2G) (Attachment 2), my mobile data is all right. Sim 2 selected GSM all time (Attachment 3) with no problem. I am using mobile data from Sim 1. When I select WCDMA/GSM (3G/2G), my mobile data HSUPA showing connected but no internet connection and emergency calls only appears (Attachment 4). And lastly UMTS and mobile network state disconnected (Attachment 5). Please note that my IMEI 2 is not valid according to IMIE.info and mobile info application. I have the mobile data available when I purchased but after OTA update, this problem occurs. THen I flash sam firmware but no improvement. Any solution regarding this will be appreciable. Thanks.
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Click to collapse
roydok said:
Try going to recovery mode and wipe cache. You can also do a full reset if it does not work.
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Click to collapse
Roydok, I did that when I flash new firmware from Sammobile. com but no improvement From HSUPA it automatically goes to UMTS and no internet connection and no call, sms etc. See the attachment 5 screenshot.

SIM card problem. Bring your S6 back to your network provider for check-up.

roydok said:
SIM card problem. Bring your S6 back to your network provider for check-up.
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Not actually a SIM card problem. I had already change SIM card 2 times. When I select WCDMA/GSM the problem activated in SIM1 or SIM2 whenever I selct anyone for mobile data.

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Mobile data is checked
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I know my phone was on Samsung Stock rom that was working fine.
How can I fix it or what?
thanks....
Sportster007 said:
I have a Verizon Samsung S3 (TWRP 2.6.3.1 and d2-VRBMF1_firmware) is running on Gummy-M1.2-03-07-14-NIGHTLY-d2lte.
WIFI setting is "off"
Mobile Data Setting:
Mobile data is checked
Network mode is CDMA/LTE/EVDO
Mobile Network State: Disconnected
I know my phone was on Samsung Stock rom that was working fine.
How can I fix it or what?
thanks....
Click to expand...
Click to collapse
I found out that the sim card was corrupted and replaced a new one. Now there was no issue of mobile data.

connection keep disconnecting

i'm having a problem with my network... the problem is i'm always disconnected automatically from my HSPA network no matter im' using HSDPA or GPRS but i can use only about 1 to 2 minutes and it's automatically reconnect what should i need to do There is no problem with my network because i tried my sim on another phone and it's work fine and also i tried a different network sim and same thing happened what i have done is flashed the stock rom and baseband and currently on cm 11 4.4.4 please someone help me My phone is LG LU-6200
Problem Solved Downgrade the Kernel...
any suggestion please
cybernalin said:
i'm having a problem with my network... the problem is i'm always disconnected automatically from my HSPA network no matter im' using HSDPA or GPRS but i can use only about 1 to 2 minutes and it's automatically reconnect what should i need to do There is no problem with my network because i tried my sim on another phone and it's work fine and also i tried a different network sim and same thing happened what i have done is flashed the stock rom and baseband and currently on cm 11 4.4.4 please someone help me My phone is LG LU-6200
Click to expand...
Click to collapse
Go to settings - > more networks
And change GSM only or WCDMA only...
Hit thank button if this post helped you
Killwish said:
Go to settings - > more networks
And change GSM only or WCDMA only...
Hit thank button if this post helped you
Click to expand...
Click to collapse
i tried it and still no luck...
Isn't there any solution for this
Sent from my LG-LU6200 using XDA Free mobile app

GALAXY S6 DUOS (G920FD)IMEI & MOBILE DATA Problem

Need your help!!!!!!
When I buy that phone S6 Dues (G920FD) default was 5.0.2 and I can use 3G without any problem. After that there is one oTA update and my 3G has gone. After that I have decided to use Stock ROM but no improvement on mobile data. I have to select GSM for both the SIM and 2G is there with slow connection. Whenever I select WCDMA/GSM for any one of the SIM, immediatley it shows "Emergency calls only" and no mobile data. Wired problem but is there any solution for that? Same IMEI shows in *#06# and back side of S6. But in IMEI.info and mobile info app shows invalid IMEI. Dont know what is the problem.
Try flashing stock 5.1.1 ROM via odin specific for your country.
http://www.sammobile.com/firmwares/database/SM-G920F/
roydok said:
Try flashing stock 5.1.1 ROM via odin specific for your country.
http://www.sammobile.com/firmwares/database/SM-G920F/
Click to expand...
Click to collapse
OK. My first stock rom was from Sammobile and the issue was the same on that. Now I am using |ROM|★ARCADIA v1.0★|►5.1.1 XXU2BOFJ◄|JULY.25.15|★ and issue has no improvement.

Nexus 5 cellular network issue on 2G only

Hello everyone,
One month ago my device had a problem of rebooting again and again and again. . . , I give my mobile phone to service center, they said you need to change motherboard to solve rebooting problem.
But I didn't change mother board, my rebooting problem solved when I pressed power button hardly.
In service center they disassembled my phone to checkup. after then when I got my mobile phone back my new problem started.
My problem is with cellular network, my build number is MMB29K my radio is radio-hammerhead-m8974a-2.0.50.2.28 my device bootloader is unlocked. my bootloader is bootloader-hammerhead-hhz12k
My device is unable to find cellular network when I set preferred network type to 2G, my device can only find network on LTE and 3G.
I tried this different radios too radio-hammerhead-m8974a-1.0.25.0.23.img, radio-hammerhead-m8974a-2.0.50.2.26.img, radio-hammerhead-m8974a-2.0.50.2.27.img But nothing works,
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Sorry for my bad English.
Does your carrier support 2g? In Canada, there is only 1 carrier that has 2g.
audit13 said:
Does your carrier support 2g? In Canada, there is only 1 carrier that has 2g.
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Yes my carrier supports 2G I live in India
Hmm, possible loose connections inside the phone?
I have the same problem, im from indonesia and im using D821, after upgrade to marshmallow, my phone only have 2g, no 3g/4g. i have solved the problem.
- first i downgrade my n5 to 4.4.4
- flash modem using recovery NEXUS5_KRT16M_RADIO.zip
- Reboot your phone
- flash again modem using recovery NEXUS5_KTU84M_RADIO.zip
- reboot your phone
- go to setting, more - mobile network - APN
- reset all APN on the list than create new apn of you mobile carrier.
- and the problem solved.
nb: bootloader must unlocked
( i dont know why should flashing the modem twice, i have try only flashed NEXUS5_KTU84M_RADIO.zip from the stock of 4.4.4 but the problem still on my phone)
sorry for my bad english.
Sent from my Nexus 5 using Tapatalk

J7 Nxt Sim 1 not registering on 3G Network. (Showing Emergency calls only)

Hello,
I have Samsung galaxy J701F phone. it's Sim 1 slot not registering on "LTE/3G/2G" , "3G/2G", "3G Only" modes. but its correctly working on "2G Only" mode. Sim 2 slot working fine with same sim under any network mode. I have checked with many network providers. result is same. sim 1 only registering on 2G network. can anyone help me?
Thank you.
Flash Stock firmware
shahidrok said:
Flash Stock firmware
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Thank you for your reply. I will try that
Thanks for helping. I had to go to samsung service center. It's a hardware fault.

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