I was having issues with iMessage and was trying to re-activate it.. so using SAM, I followed a tutorial to de-activate my phone and re-activate it.. except, I can't reactivate it now. When I plug it into iTunes, it says "There is a problem with your iPhone". I didn't realize that Apple had blocked SAM from working recently. I'm on Verizon so I have no SIM card. I have no idea how to get my phone activated again. Am I totally screwed?