T-Mobile Modem Switcher for Samsung Galaxy Tab

rotohammer from xda has released instructions for T-Mobile Modem Switcher for your Samsung Galaxy Tabs. With this, you can either 3G or Phone and 2G that you need to. The hacker posted the instructions last year in December and assured that soon he will be releasing an app for the same. But the time he is unable to make the app, he asked to follow his instructions that he would be clubbing into the app.

Don’t know whether the app is still available or not but yes the steps to do the same are.

More Tab Tutorials,
* Rooting 10.1
* Unlocking 10.1v

Modem Switcher Instructions

1. The first step is to install GScript Lite from Market. It helps to run and load the shell scripts from within the Android using a single touch.

2. Next download and install BusyBox Installer. It installs a working version of BusyBox on your phone. It is needed by many root apps and is a must tool to have.

3. Download modemswitch.zip file. Comment here if you want it in email. Make sure that this zipped file contains the following 5 files in image.
T-Mobile Modem Switcher for Galaxy Tab

4. Extract the contents of the above zipped file onto your phone’s SD card.

5. You will see that there’s a directory /sdcard/modemswitch having all the 5 files in it.

6. Copy the /sdcard/modemswitch/switch.sh to /sdcard/gscript/ directory.

7. Open GScript.

8. Press ‘Menu’.

9. Press ‘Add Script’.

10. Press ‘Load from file’.

11. Select the switch.sh file and press ‘Save’.

12. Hold the desktop. Select ‘shortcuts’, then ‘GScript Lite’, followed by ‘switch’.

13. Disconnect the USB and/or unmount /sdcard.

14. Finally you need to press the ‘switch’ desktop icon for switching the modems.

15. Samsung Galaxy Tab will reboot with effect of new modem.

All supports at hackers thread


  1. Hi Atul,
    I am new to the Galaxy Tab and so far have flashed successfully. I am trying to follow the above directions but I am running into problems. I have a micro SD which I put into my tab. I put the tab in Mass Storage mode and my android tab folders show up as my G drive and the memory card shows up as H drive. I created a folder “sdcard” in the H drive and extracted all files into it. I copied the file from /sdcard/modemswitch/switch.sh to /sdcard/gscript/ directory. When I run gscriptlite to load file I get an error “Error while looking for scripts in /sdcard/gscript/.” “java.lang.nullpointerexception”
    I would greatly appreciate your help.Thank You

  2. Nevermind, got it. All you guys (including xda) are awesome for sharing. This tab rocks now!

  3. keep me updated

  4. Need roto file in a email please.

  5. Can you please email the file to me?

  6. I cannot figure out how to do step 6. On my computer, Gscript is unavailable to copy into.

  7. Okay after a bit of fooling around I have managed to follow your instructions to what I believe was correct. However, upon the last step, I noticed it did not reboot itself, so I rebooted, then tapped switch and it says stder: unknown operand, and,
    data/local/temp/redbend_ua: No such file or directory.
    ? What went wrong?

  8. Can you email me files please?

  9. I can’t find modemswitch.zip

  10. Would you mind sending me the file??

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