Hi All There is another post on this problem but it's in the Epic 4G forum not Galaxy S. The solution was a factory reset which I don't want to try yet until I've exhausted other possibilities, so please forgive me for starting a new thread. I have a Samsung Galaxy S, T-Mobile UK. Last week I hacked the phone to change the product code from TMU to XEU in order to update the firmware to Froyo 2.2 (a particular reason I don't want to factory reset as I don't know how it will affect a rooted phone). Update went fine, Froyo works well, but I've lost the ability to send or receive text messages. Everytime I try to read or send an SMS, I get a blank screen and after about 20 seconds the message "Sorry! The application Messaging (process com.android.mms) has stopped unexpectedly. Please try again. Force close". Also, all saved threads were showing as 0/* suggesting there are no messages in the threads. I have installed Handcent which works fine so I can now send and receive texts, but I would like to fix the issue if possible. Googling the problem suggests deleting all messages/clearing cache which didn't help. Any suggestions will be gratefully received!