Wi-Fi vs 3G on the P3100 - Galaxy Tab 2 Q&A, Help & Troubleshooting

How do you differentiate a Wi-Fi model from a 3G one? I just flashed a Wi-Fi variant over my 3G model, and now the phone is missing.

greeny2010 said:
How do you differentiate a Wi-Fi model from a 3G one? I just flashed a Wi-Fi variant over my 3G model, and now the phone is missing.
Click to expand...
Click to collapse
buddy its simple there is a sim card slot on 3g model but not on wifi...
And on flashing you didn't get any phone option bcoz wifi model firmware do not have any module for calling(gsm utility) like phone.apk etc...

greeny2010 said:
How do you differentiate a Wi-Fi model from a 3G one? I just flashed a Wi-Fi variant over my 3G model, and now the phone is missing.
Click to expand...
Click to collapse
1- As i understand you have the 3g model and flashed a rom made for wifi model and didi not find any phone functions it is normal as this rom you flashed made specifically for wifi only model so do not expect it to display phone functions as it is not designed to use you gsm module in your tab it is for another model without gsm module so your gsm module will not find app inside this rom to use its abilities so will remain dormant and silent
2- Regarding your question flash only the roms that say clearly it is for p-3100 not those for p-3110 or p-3113 as those do not contain gsm module so will work in your device but no gsm functions or phone functions will work if you flash a rom that says clearly in the instructions in the thread you downloaded from that it is for p-3100 so you are good to go and gsm and phone functions will work no worries
3- I read a reverse condition of yours as if one with for example p-3113 ( without gsm module or phone functions) flashed a rom for p-3100 (with gsm and phone functions) the icons of phone and messaging and contacts will appear to him but if he presses these icons no actions happen as no gsm module found in his device
Sent from my GT-P5100 using xda app-developers app

Related

[TUT] How to Make and Flash CWM RECOVERY on any .MediaTek MTK65xx Device

Things needed:
A rooted mtk65xx phone
mtk65xx Drivers
MtkDroidTools (latest preferred)
Original Rom
MTK MobileUncle Tools app (PlayStore)
MKT DROID TOOLS link http://dfiles.eu/files/fmnok7ke7
More tools at the end of post..
Hello, in this tutorial I will be showing you all how to make and flash cwm recovery in your mtk65xx phone. I will be using the CUBOT GT99 android. It's an mtk6589 and I got it from geekbuying.com.
All credits go to @jimymoto from http://www.movilesdualsim.com/foro/threads/39602-Recovery-CWM-Cubot-GT99 for his great job.
Visit the forum for more about your Cubot gt99 including custom roms, tweaks, fixes, reviews..e.t.c
REMEMBER THAT FLASHING YOUR PHONE ALWAYS HAS RISKS AND I AM NOT RESPONSIBLE FOR ANYTHING THAT MAY HAPPEN TO YOUR DEVICE.
Okay, so first you will need to extract the boot.img from the stock rom of your phone.
Next, connect the phone with USB DEBUGGING ON to your PC. Open MTKDroid tools.
The program will recognize your device and it should list your device details. In case it doesn’t, open the ADB terminal in the program and write "adb devices" without the caps. If PC doesn't recognize any device, then you need to install the mtk drivers.
Open the root, backup, recovery tab and click on "To choose the boot.img file". Leave all the rest as they are. Then click on Recovery and Boot and select the boot.img we got earlier from the phone's Stock Rom.
A prompt will appear and there choose YES. A few seconds later, you will see task complete. Go back to the MTKdroidTools folder and you will see a new folder called recovery. Inside, you have two files. Take the one with the word recovery and place it in the root of your phone’s SD card (not in any folder).
From here on we work with the phone.
Open MobileUncle Tools and go to the Recovery Update. You should see the recovery you placed in your SD card. Select it and click on OK. Finally, choose reboot to Recovery. If all was done correctly, your phone should boot into your new cwm recovery.
You can now backup your stock rom and flash custom roms, patches, kernels and others without fear of bricking!!
I have done this procedure successfully on my Cubot gt99.
Cubot gt99 stock rom – http://blog.geekbuying.com/index.php/2013/07/06/cubot-gt99-mtk6589-stock-firmware-and-flash-method/
Cubot gt99 cwm recovery (ready to flash) - https://mega.co.nz/#!LIIEkDhJ!aCSeGXf2VSAlTZUGo3LgMCIGNPY8u9Y1PAXDb-tbmyU
Mtk6589 drivers - http://vondroid.com/resources/mediatek-mt6589-driver.236/#.UfFrJW0lFYn
Cubot gt99 rooting tools (100% working) - http://vondroid.com/resources/universal-root-for-mt6589-phones.237/#.UfFraW0lFYm
After flashing the recovery, I've a inverted recovery screen. What went wrong?
greeny2010 said:
After flashing the recovery, I've a inverted recovery screen. What went wrong?
Click to expand...
Click to collapse
What do you mean inverted recovery screen? Which phone are you using?
Aeonia said:
What do you mean inverted recovery screen? Which phone are you using?
Click to expand...
Click to collapse
The recovery menu appears upside down else everything looking fine. My phone is a copy of I9500 with Ex chip.
Thanks for tutorial..
But unfortunately cwm recovery part didn't worked for me... i got the two files, flashed using mobile uncle tools and sp flash tools method...
But i'm booting in stock recovery only..
Is it mandatory to connect the phone... ?? How that differs?
I have extracted stock rom using the tool.
yes its important to connect the phone so that the software tests the cwm recovery to see if its compatible with your boot.img...all you have to do is connect the phone and once it turns yellow (the box at the bottom) and lists your phone's details then select your boot.img and continue
3G not working with my Cubot G99
i bought cubot G99
it is excellent and work fine
but i have problem with 3G
frequency of 3G in my country is 2100
i tried many times to turn on 3G but 3G not work at all
can you help me to turn on 3G on my cubot g99?
drn508 said:
3G not working with my Cubot G99
i bought cubot G99
it is excellent and work fine
but i have problem with 3G
frequency of 3G in my country is 2100
i tried many times to turn on 3G but 3G not work at all
can you help me to turn on 3G on my cubot g99?
Click to expand...
Click to collapse
lol thanks for the TuT
But.......
It's more simple if you :
- download your stock rom:
- Use SPFlashTools to Flash, this is the ORIGINAL tool, and i can assure you its saffer than this tool.
If you damage the bootloader with this tool, your phone is paper weight ...
drn508 said:
3G not working with my Cubot G99
i bought cubot G99
it is excellent and work fine
but i have problem with 3G
frequency of 3G in my country is 2100
i tried many times to turn on 3G but 3G not work at all
can you help me to turn on 3G on my cubot g99?
Click to expand...
Click to collapse
you should know that the cubot gt99 is a dual sim and like most chinese dual sim phones...only sim one is able to have 3G while the other sim(sim 2) EDGE. check if you have placed your sim card in the correct slot(slot 1). also check if you have the correct internet settings for your provider.
finally, you can install the application mtk mobile unlce tools from play store and then access engineer mode(MTK) choose Telephony and then BandMode..here you can check to see what bands are supported by the cubot gt99 under sim1 and sim2...
Aeonia said:
yes its important to connect the phone so that the software tests the cwm recovery to see if its compatible with your boot.img...all you have to do is connect the phone and once it turns yellow (the box at the bottom) and lists your phone's details then select your boot.img and continue
Click to expand...
Click to collapse
Ahhh. .It worked on my Micromax A116.:good::good::good:.
Have to check on Auxus Nuclea N1..
But how to get the latest version of CWM??
I got CWM v5.5.0.4..
viijay4b7 said:
Ahhh. .It worked on my Micromax A116.:good::good::good:.
Have to check on Auxus Nuclea N1..
But how to get the latest version of CWM??
I got CWM v5.5.0.4..
Click to expand...
Click to collapse
good to hear that....i also have v5.5.0.4 i think that a mtk droid tools may be updated later on but for now it is still patching it to v5.5.0.4
Aeonia said:
you should know that the cubot gt99 is a dual sim and like most chinese dual sim phones...only sim one is able to have 3G while the other sim(sim 2) EDGE. check if you have placed your sim card in the correct slot(slot 1). also check if you have the correct internet settings for your provider.
finally, you can install the application mtk mobile unlce tools from play store and then access engineer mode(MTK) choose Telephony and then BandMode..here you can check to see what bands are supported by the cubot gt99 under sim1 and sim2...
Click to expand...
Click to collapse
yes there are dual sim
first one W+G and second one only GSM
I put my sim inside W+G slot
SIM 1
http://im37.gulfup.com/ZzRcN.png
SIM 2
http://im37.gulfup.com/Sgn5B.png
drn508 said:
yes there are dual sim
first one W+G and second one only GSM
I put my sim inside W+G slot
SIM 1
http://im37.gulfup.com/ZzRcN.png
SIM 2
http://im37.gulfup.com/Sgn5B.png
Click to expand...
Click to collapse
okay so according to your pics..your sim card is placed in the SIM 2 slot..try putting it IN THE OTHER SLOT...according to mine, when network bars are blue( SIM 2) - EDGE and when network bars are green ( SIM1) - 3G/HSPDA
Aeonia said:
okay so according to your pics..your sim card is placed in the SIM 2 slot..try putting it IN THE OTHER SLOT...according to mine, when network bars are blue( SIM 2) - EDGE and when network bars are green ( SIM1) - 3G/HSPDA
Click to expand...
Click to collapse
see this pic
http://www.cubot.net/UploadFile/ImgInfo/20136131723335827378.jpg
i put my sim at left slot W+G
i tried before to change sim position but no different for color of network bars always blue
i can change color of network bar manually to green,orange and blue
drn508 said:
see this pic
http://www.cubot.net/UploadFile/ImgInfo/20136131723335827378.jpg
i put my sim at left slot W+G
Click to expand...
Click to collapse
okay...check your network mode..maybe its on 2G instead on 3G should be here...Wireless and Networks> Mobile Networks> 3G service> choose Network Mode and tick WCDMA only
also what is written under Mobile Network Type in SIM status? Settings> About phone >SIM status
Aeonia said:
okay...check your network mode..maybe its on 2G instead on 3G should be here...Wireless and Networks> Mobile Networks> 3G service> choose Network Mode and tick WCDMA only
also what is written under Mobile Network Type in SIM status? Settings> About phone >SIM status
Click to expand...
Click to collapse
please see these pics
http://im36.gulfup.com/p4dj9.png
http://im36.gulfup.com/MooA6.png
http://im36.gulfup.com/UwyAu.png
http://im36.gulfup.com/P9Vwk.png
http://im36.gulfup.com/zVXiP.png
SIM status
http://im31.gulfup.com/NVEiz.png
i don't know where is the problem ?
drn508 said:
please see these pics
http://im36.gulfup.com/p4dj9.png
http://im36.gulfup.com/MooA6.png
http://im36.gulfup.com/UwyAu.png
http://im36.gulfup.com/P9Vwk.png
http://im36.gulfup.com/zVXiP.png
SIM status
http://im31.gulfup.com/NVEiz.png
i don't know where is the problem ?
Click to expand...
Click to collapse
am not sure there is a problem...from the pics, your network is defintely on 3G..the network type is HSPA which is 3G+....are you able to browse on EDGE with your current settings?
Aeonia said:
am not sure there is a problem...from the pics, your network is defintely on 3G..the network type is HSPA which is 3G+....are you able to browse on EDGE with your current settings?
Click to expand...
Click to collapse
i can't browse on EDGE only on WIFI
i had before Cubot GT99 Sony Ericsson Neo was worked with 3G without any problems.
drn508 said:
i can't browse on EDGE only on WIFI
i had before Cubot GT99 Sony Ericsson Neo was worked with 3G without any problems.
Click to expand...
Click to collapse
then it is simple...you dont have your internet settings which are provided by your service provider...You can check to see if you have them under Mobile Networks >> Access Point Names>>here...Did you find anything here? if not, contact your service provider to send you the settings or you can input them yourself if you know them...
Aeonia said:
then it is simple...you dont have your internet settings which are provided by your service provider...You can check to see if you have them under Mobile Networks >> Access Point Names>>here...Did you find anything here? if not, contact your service provider to send you the settings or you can input them yourself if you know them...
Click to expand...
Click to collapse
you are right
i contact my service provider to send my internet settings
and now everything is working:good:
very thank you Aeonia to help me
i appreciate you effort

Help needed for CDMA data service (downgrading from 4.4.2 to lower version)

I have a Samsung Galaxy S3 SCH-I535 CDMA Verizon & GSM phone. Originally it was on android 4.1.2 and working fine for both CDMA and GSM (one at a time). CDMA EVDO Rev A data service was working fine.
I am using this phone in Nepal (not in USA). It was carrier unlocked for both CDMA & GSM when I purchased from Amazon. (so, I guess, Originally it may had some customized firmware/ROM for International use, I don’t have much idea).
I was asked for firmware upgrade every time when I run Samsung Kies. One day I clicked to upgrade the firmware. The upgrade was over successfully. But the new android version I found on my phone was 4.4.2.
In this version /new upgrade, I was unable to use CDMA data (EVDO-rev A). So I wanted to reverse back to old version. I search the process in Google and tried to load firmware with the help of Odin3 using this file:- “I535VRBMF1_I535VZWBMF1_VZW.zip”, but it was not successful. Result: Fail(Auth)
Then I loaded firmware for 4.4.2 using Odin3.09 (AP: “I535VRUDNE1_I535VZWDNE1_I535VRUDNE1_HOME.tar.md5”) and now the phone is working.
• If I use GSM SIM I can make call and use HSPA data service as well by adding new APN.
• If I use CDMA RUIM I can make call, BUT DATA SEVRICE using CDMA EVDO Rev A is NOT WORKING!! (I can not save APN in this case).
Now my issue is how to make CDMA EVDO data service working in my phone, because my basic requirement is to use this phone for CDMA service (voice + data).
I can edit the APN but when I click “Save”, nothing was saved. So I can not select APN for my carrier. I tried using APN Manager Pro too, here I can enter & enable the APN, but did not work. The phone is not able to dial the data access code #777 (verified from CDMA service provider side trace).
Can someone help me what I should do to make my phone working for CDMA data. My phone is rooted.
I guess it may work for CDMA data if I downgrade it to 4.3 or 4.1.2,
Can I do that. If so what are the procedures / steps. Any help in this regard would be highly appreciable.
My data worked this way
kkafle said:
I have a Samsung Galaxy S3 SCH-I535 CDMA Verizon & GSM phone. Originally it was on android 4.1.2 and working fine for both CDMA and GSM (one at a time). CDMA EVDO Rev A data service was working fine.
I am using this phone in Nepal (not in USA). It was carrier unlocked for both CDMA & GSM when I purchased from Amazon. (so, I guess, Originally it may had some customized firmware/ROM for International use, I don’t have much idea).
I was asked for firmware upgrade every time when I run Samsung Kies. One day I clicked to upgrade the firmware. The upgrade was over successfully. But the new android version I found on my phone was 4.4.2.
In this version /new upgrade, I was unable to use CDMA data (EVDO-rev A). So I wanted to reverse back to old version. I search the process in Google and tried to load firmware with the help of Odin3 using this file:- “I535VRBMF1_I535VZWBMF1_VZW.zip”, but it was not successful. Result: Fail(Auth)
Then I loaded firmware for 4.4.2 using Odin3.09 (AP: “I535VRUDNE1_I535VZWDNE1_I535VRUDNE1_HOME.tar.md5”) and now the phone is working.
• If I use GSM SIM I can make call and use HSPA data service as well by adding new APN.
• If I use CDMA RUIM I can make call, BUT DATA SEVRICE using CDMA EVDO Rev A is NOT WORKING!! (I can not save APN in this case).
Now my issue is how to make CDMA EVDO data service working in my phone, because my basic requirement is to use this phone for CDMA service (voice + data).
I can edit the APN but when I click “Save”, nothing was saved. So I can not select APN for my carrier. I tried using APN Manager Pro too, here I can enter & enable the APN, but did not work. The phone is not able to dial the data access code #777 (verified from CDMA service provider side trace).
Can someone help me what I should do to make my phone working for CDMA data. My phone is rooted.
I guess it may work for CDMA data if I downgrade it to 4.3 or 4.1.2,
Can I do that. If so what are the procedures / steps. Any help in this regard would be highly appreciable.
Click to expand...
Click to collapse
I think your problem is the region is not set Nepal...I installed dark jb rom in my phone and data was gone since then. Then I manually downloaded stock firmware and flashed through odin but still data wasnt working,nd while in recovery mode i saw region INS ie India. then something came in my mind and.. .I changed it to NPL and now i can use data in only sim 1 only not in both sims. So i also may need some help.
For you *#272*IMEI# . Use your phones IMEI number there (*#06#) . Select NPL region.
NOTE: It will hard format your phone installing required carrier apps, aps, bla bla and hope work on your phone
Pujan Shrestha said:
I think your problem is the region is not set Nepal...I installed dark jb rom in my phone and data was gone since then. Then I manually downloaded stock firmware and flashed through odin but still data wasnt working,nd while in recovery mode i saw region INS ie India. then something came in my mind and.. .I changed it to NPL and now i can use data in only sim 1 only not in both sims. So i also may need some help.
For you *#272*IMEI# . Use your phones IMEI number there (*#06#) . Select NPL region.
NOTE: It will hard format your phone installing required carrier apps, aps, bla bla and hope work on your phone
Click to expand...
Click to collapse
I found that the hidden menu (& hence secret code dialing) was disabled in my phone. Following guides from Google search I enabled it. Now codes likes "*#06#",*#1111#", "*#0228#" etc are working, but "*#272*IMEI#" is not working. Any idea, why it is not working?
kkafle said:
I have a Samsung Galaxy S3 SCH-I535 CDMA Verizon & GSM phone. Originally it was on android 4.1.2 and working fine for both CDMA and GSM (one at a time). CDMA EVDO Rev A data service was working fine.
I am using this phone in Nepal (not in USA). It was carrier unlocked for both CDMA & GSM when I purchased from Amazon. (so, I guess, Originally it may had some customized firmware/ROM for International use, I don’t have much idea).
I was asked for firmware upgrade every time when I run Samsung Kies. One day I clicked to upgrade the firmware. The upgrade was over successfully. But the new android version I found on my phone was 4.4.2.
In this version /new upgrade, I was unable to use CDMA data (EVDO-rev A). So I wanted to reverse back to old version. I search the process in Google and tried to load firmware with the help of Odin3 using this file:- “I535VRBMF1_I535VZWBMF1_VZW.zip”, but it was not successful. Result: Fail(Auth)
Then I loaded firmware for 4.4.2 using Odin3.09 (AP: “I535VRUDNE1_I535VZWDNE1_I535VRUDNE1_HOME.tar.md5”) and now the phone is working.
• If I use GSM SIM I can make call and use HSPA data service as well by adding new APN.
• If I use CDMA RUIM I can make call, BUT DATA SEVRICE using CDMA EVDO Rev A is NOT WORKING!! (I can not save APN in this case).
Now my issue is how to make CDMA EVDO data service working in my phone, because my basic requirement is to use this phone for CDMA service (voice + data).
I can edit the APN but when I click “Save”, nothing was saved. So I can not select APN for my carrier. I tried using APN Manager Pro too, here I can enter & enable the APN, but did not work. The phone is not able to dial the data access code #777 (verified from CDMA service provider side trace).
Can someone help me what I should do to make my phone working for CDMA data. My phone is rooted.
I guess it may work for CDMA data if I downgrade it to 4.3 or 4.1.2,
Can I do that. If so what are the procedures / steps. Any help in this regard would be highly appreciable.
Click to expand...
Click to collapse
Well, it looks to me as though you've locked your bootloader and are now stuck on 4.4.2. For some reason, Verizon forces Samsung to lock their bootloaders, which means we (the consumers) cannot install "custom" firmware on our devices (or downgrade).
Once you're on 4.4.2 NE1 your stuck with it. No downgrade possible at least not without a Jtag service
Sent from my SCH-I535 using Xparent ICS Tapatalk 2
I have faced similar problem I can't create apn I am using it in India . So my data i not working on any sim card but i can make and receive calls . My android version is also 4.3 . So please help me i want to use both hspa and evdo .
Sent from my iPhone using Tapatalk

Help Plz searching for service problem

My nexus 5 says searching for signal and I can't make calls or use mobile data etc... I just flashed pa yesterday so of course I'm rooted and have unlocked bootloader , I'm using dalvik tell me if you need more information
Mazen Amr said:
My nexus 5 says searching for signal and I can't make calls or use mobile data etc... I just flashed pa yesterday so of course I'm rooted and have unlocked bootloader , I'm using dalvik tell me if you need more information
Click to expand...
Click to collapse
do you own a usa version n5 or a european version?
D820 and I live in Egypt (the European)
Mazen Amr said:
D820 and I live in Egypt (the European)
Click to expand...
Click to collapse
d820 is for the north american market, but it should still connect to phone calls, just not lte http://www.phonearena.com/news/Differences-between-the-two-Nexus-5-models-D820-and-D821_id48985
So sorry I meant D821
have you tried to use a different sim card? someone elses sim card..
My nexus Sim is Vodafone and I have a tablet that supports calling with Etisalate Sim, I switched the Sims and the Vodafone one works perfectly on the tablet but the Etisalate don't work on the mobile and when I returned them back the Vodafone don't work again and the Etisalate works again so the problem is with the phone
I tried re flashing Paranoid Android but the same problem
Try flashing stock. If it's the same, it's hardware. Sim card, device or something. Or its carrier related issue.
Sounds like the radio is set to LTE only mode.
Dial *#*#4636#*#* and check your network configuration
#stayparanoid
Pirateghost said:
Sounds like the radio is set to LTE only mode.
Dial *#*#4636#*#* and check your network configuration
#stayparanoid
Click to expand...
Click to collapse
Lol I found this on the internet and did it and it worked before you even said but I'll hit the thanks button anyway ??

Enable Wifi Calling on rooted G920F / 5.1.1 on T-Mobile network

Hi,
I have a rooted (UniKernel + TWRP) on a stock 5.1.1 rom.
I bought this phone in order to have an international version but I'm living in the US with a T-Mobile SIM card.
I rooted this phone to try to enable Wifi calling on my G920F.
I followed this guide to add the Wifi Calling option to the Phone settings --> Enabling Hidden Features
( I added the two lines in others.xml )
This is based on EE network Wifi calling capabilities.
After restarting I have the option, turned it on but nothing worked.
Apparently I am missing another option to choose the wifi calling mode according to T-Mobile support :
Select one of the these options:
Wi-Fi Preferred
Cellular Network Preferred
Never use Cellular Network
Click to expand...
Click to collapse
I don't have the Wifi Calling app installed also. Does someone have an APK ?
Did anyone make it work ? What settings did you use ?
Also if someone has a T-Mobile version, it is possible to get the content of Others.xml in order to compare.
Thanks

S6 Edge At&t unlocked No update and LTE signal

Sir I purchased a new unlocked S6 Edge ( 925A) at&t device from abroad to use in india.
The guy told it's fully unlocked and it support any sim card. Buy when I checked with Indian Sims I am getting only 2g signals .. I am not getting 3G and 4g signals..
When I checked for network selection mode settings it's missing in the settings.
No software OTA update is available. . I think it's also disabled.. when I checked the device status it is in "custom"..
So if I flash a stock ROM with Odin will it lock again ?
Do I need to unlock it again.. ??
First check the model from bootloader, if its actually a att variant then you can flash a stock rom too make it work as normal, but if its some other variant then get back to this thread again.
Its surely an at&t Variant of Samsung Galaxy S6 EDGE.. its model number is 925A.. which is only available for ATT..
Its baseband version is G925AUCU1AOCE
I purchased this phone as fully unlocked from UAE but in india when i start to use it i came to know that its not taking 3G and 4G signals .. but 2g Signal and Data services are working fine..
I got the phone in rooted condition without any Boot animation of At&t. Since its rooted i am not getting any official updates.
I am also facing many software bugs.. from different apps..
So really want to flash the phone with a new stock rom for using it..
I have some doubts about it please clear it..
1) if i flash it with an official att stock rom will it lock again for att network ?
2) can i remove the att boot animation after flashing with stock rom ?
Sent from my SM-925A using XDA Free mobile app
Providers in India use bands 3, 40, and 41 for LTE. The AT&T S6 Edge is only compatible with band 3.
I doubt you'd be able to flash a different ROM, and even if you could, you still wouldn't have compatibility with bands 40 or 41.
Firstly Thanks for your reply.. i know that S6 Edge at&t only support Band 3 LTE cuz it's a FDD LTE supported device.. in my country here providers are using both TDD & FDD LTE bands for LTE..
In my region "Kerala" at presently all the providers are using Band 3 which is compatible will my phone. But i am not receiving any LTE and 3G signals..
My friends have different unlocked phones from T-Mobile they are not facing any problem..
I am still doubt the flashing ROM.. i am going to flash the stock rom for at&t.. it's the only official rom available for my device.
It could be an APN issue. Make sure the settings are the same as your friends are using. Beyond that, I have no idea.
Nothing Wrong with the APN.. cuz i am using 2G data without any problems.
We have same APN for all 2G ,3G & 4G..
I think its the problem with my software..
I can't switch between LTE/WCDMA/2G because that network mode selection option is disabled or not available..
I am compelled to flash a new Rom..
I don't have any other options.
I own a good phone but i can't use it . Really sad about it..
for sure people here can help you more on this
http://forum.xda-developers.com/galaxy-s6-edge
I have my s6 Edge in Fully unlocked condition with Root Access also..i purchased it as unlocked from Dubai. But i cant find any Network Selection mode in my settings. Itz a ATT variant with model number 925A. The device is not taking 4G signals in india. Also there is no Network selection option in the settings to toggle between 3g & 4G..
Please help me?

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