How To Fix MMS Problem After Jailbreaking And Unlocking iPhone On T-Mobile US

BY Jason

Published 8 Aug 2010

Unlock iPhone 4

Some of our readers who had jailbroken and unlocked their iPhone to use T-Mobile SIM in the US have complained that MMS doesn’t work.

We have some good news if you’re facing the issue. The iPhone hacking community has released a patch to fix the issue that can be installed from Cydia.

You can follow these instructions to fix the MMS issue:

  • Launch Cydia from your jailbroken iPhone homescreen.

  • Tap on the “Manage” Tab and then tap on “Sources” section.

  • Tap on the “Edit” button and then tap “Add” to add the following repo URL to add sources:

  • After it is successfully installed, tap on the “Search” tab at the bottom and search for ‘T-Mobile US  MMS Fix for iOS4’.

  • Tap on T-Mobile US  MMS Fix for iOS4.

    T-Mobile MMS Fix
  • Then tap on the “Install” button and then the “Confirm” button to install the patch.

  • If you launch the Settings app and navigate to Settings –> General –> Network –> Cellular Data Network, you should see the following settings under MMS:

MMS Proxy:
MMS Max Message Size: 1048576

  • Restart your iPhone.

After your iPhone has restarted, MMS should be working on your jailbroken and unlocked iPhone on T-Mobile US.

As always, let us know it goes.