Great program! Costs $30 but moved 5000+ text messages from Galaxy Nexus to iPhone 5 with the Galaxy using wifi and the iphone connected via USB. It merged the old texts into the existing threads on the iPhone. Works great. I'm on Jelly Bean on the Galaxy Nexus and iOS 6.01 on the iPhone 5.
Just make sure iCloud backup is off and encrypted backup on the iPhone is not enabled.
Cheers,