Fixing Samsung Galaxy S network problems

If your Samsung Galaxy S displays no network/no signal, or emergency calls only, try the following things:

1. flash the device again with the modem image (download the firmware of your device from, delete everything from the .tar file except modem.bin, and then flash this file to the phone with Odin (you can get Odin and instructions from that site too)

2. maybe your nv_data.bin file or /efs directory got corrupted, make a backup of the folder, then simply delete nv_data.bin, it will be recreated for you on Galaxy S.

For this, you’ll need root. If you have a root-enabled kernel, like the Voodoo lagfix kernel, you only have to install the Superuser app and Busybox on the phone, download the Android SDK to your PC, install platform-tools in the SDK manager, go to the platform-tools directory and start adb shell.

In the shell, type su, wait for the Superuser prompt to appear on the phone (if it does not appear, open the Superuser app and try executing su again), enable root access for the command. Now go to /efs, copy everything to for example /sdcard/efs, then rm nv_data.bin.

Reflashing the device with a kernel and checking “phone EFS clear” in Odin also works (make sure you made a backup of the EFS folder just in case).

3. you can try changing the CSC (to XEU for Europe): enter *#272*imei# on the phone tab. Note: this will reset your phone to factory settings, so make sure you did a clockworkmod backup before this. Incorrect CSC setting may cause MMS not working also.

4. check if you inserted the SIM card correctly :)

Farooq Azam 2012-01-06 11:30:04

my samsung galaxy s is showing no network coverage

Nonoo 2012-01-06 11:31:27

Have you tried any of my fix methods?

Udi 2012-03-02 22:21:27

on my samsung is showing R on top of the signal bars and i have tried everthing but its still showing it and also im not getting proper signal. can you help me

Nonoo 2012-03-02 23:47:46

That’s because you are roaming. Go to settings -> Wireless & network -> Mobile networks and select your network operator.

eefames 2013-12-19 07:17:04

my galaxy s plus was trouble on network coverage.sometimes it working and sometimes it doesn’t working to fix it?

abdulnahin 2013-12-21 15:24:39

my galaxy s showing sim network but not working they shown no service….what is that

abdulnahin 2013-12-21 15:26:01

give me answer fast…….

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