HOW TO FIX I PHONE SMS PROBLEMS THE EASY WAY

Open installer, and tap Sources, Edit and Add.

Type in http://i.unlock.no/ and Ok then Done.

Now tap on Install at the bottom and scroll down to the Unlocking Tools category
Install SMS Fix

When done installing, reboot your phone and it should work

Note: I have not throughly tested this, so there may be side effects i'm not aware of yet. But you can just uninstall the package to revert the changes. I only tested on 1.1.1.