HOW TO: Boost Your iPhone 5’s Cellular Speeds On T-Mobile US


TmoNews reports that two well known cellular programmers, @joe012594 & @cooldayr2, have successfully modified the carrier update to “increase the amount of bandwidth allowing for better throughput of data and data connection.”

Jump over the break to check out how to amplify your iPhone 5’s cellular speeds on T-Mobile US…

Non-jailbroken users:

1. Plug your iPhone 5 into iTunes and backup the device so you won’t lose anything.

2. In the device itself, tap the “Settings” app and navigate to “General  > Reset  > Erase all content and Settings”

3. Once you have done that, the iPhone will auto reboot.

4. Download the hacked carrier update here:

5. Once downloaded, your iPhone will boot up into iTunes. Before you do ANYTHING, make sure to decline any and all prompts to update carrier settings. Just choose to
“Restore from backup” and let it run.

6. Once your iPhone has booted up once again, it will place all of your personal content back into the Phone. While it’s doing this we’re going to go ahead and enable iTunes to except custom carrier bundles, if it’s not already.

7. Windows users: you will need to open command prompt and type the following and enter it in:

  • 64 bit: cd “C:\Program Files (x86)\iTunes”  then type:  iTunes.exe /setPrefInt carrier testing 1
  • 32 bitcd “C:\Program Files\iTunes”  then type:  iTunes.exe /setPrefInt carrier testing 1

7.1 Mac users: you will need to open terminal and type the following and enter it in:

  • defaults write carrier-testing -bool true

8. After this has successfully been entered in, click on the tab for your iPhone 5 and click “Update” or “Check For Update” while holding down the Alt / Optionkey for Mac users and the Shift key for Windows users. Navigate to where you downloaded the hacked carrier update file named “TMobile_US_iPhone.ipcc,” and select it then click Open.

9. The carrier update should now successfully be installed. Restart your iPhone 5 for any changes to take effect.

10. If you encounter any problems or wish to revert back just download the file below and repeat the above steps only with the default file instead.

Default File:

Jailbroken Users:

1. Download the file to your device through iFile here:

2. Unarchive the files and copy the file name “overrides_N41_N42.pri” then navigate to var/mobile/Library/Carrier Bundles/TMobile_US.bundle and paste it into the folder replacing the original .pri file.

3. Reboot your device for changes to take effect.

4. If you encounter any problems or wish to revert back just download the file below and repeat the above steps only with the default file instead.

Default File:




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