I just found out about this fix from Redmond Pie’s Facebook fanpage and thought I should share it with you all. If you cant wait for JailbreakMe update, here is a quick possible fix for FaceTime and MMS issue on iPhone 4 after jailbreak using JailbreakMe 2.0 (Star). Simply follow the step by step guide below to fix the issue.
Step 1: Follow the step by step guide posted here to jailbreak your iPhone 4, 3GS on iOS 4.0.1 / 4.0 using JailbreakMe.
Step 2: Once you are done with the jailbreak, start “Cydia” on your iPhone.
Step 3: Touch on “Manage” tab on the bottom.
Step 4: Now touch on “Sources” as seen in the screenshot below:
Step 5: Touch on “Edit”, and then on “Add”. You should now be prompted to enter a url source as seen in the screenshot below. Type “http://iphonedelivery.advinux.com/cydia/” and click on“Add Source”.
Cydia will now automatically update your sources by following a series of automated steps.
Step 6: After installation is completed. Search for “iPhoneDelivery” in Cydia and install this application. This app apparently fixes both the FaceTime and MMS issue.
UPDATE 1: JailbreakMe has been updated which has fixed all the problems related to FaceTime and MMS. If you are doing a fresh jailbreak, you will not have any of these issues. Existing users will need to do a “Complete Upgrade” of Cydia followed by a reset of Network Settings. To do this, simply fire up Cydia and let the loading to finish. It will now automatically ask you to update Cydia. Touch on “Complete Upgrade” and reboot the device once it is done. Go to Settings –> General –> Reset –> Reset Network Settings. Reboot the device again. The problem should be fixed now.
UPDATE 2: Are you stuck on purple-colored space screen of JailbreakMe? Follow the instructions posted here to fix this problem.