I submitted My 4s för warranty repair and changed back to My 3GS.. But now i cant send or recive iMessage in the phone. http://apple.stackexchange.com/ques...sistently-failing-to-work-after-sim-card-swap Here is à Pretty good recap of ny problem, the only different is that iMessage never worked after i changed sim. I have done a reset of all settings aswell, without results. Any1 have som idea?