I've had my phone for 3months, I got it off e-bay, unlocked already. Worked perfectly until earlier today during a phone call it said "no sim present"...now I cant get it to recognise that the sims there. I put my sim in an old phone & it's fine so it;s not the sim, I also put another sim in the iphone & it said the same. I tried the reset network factory settings option too & it still didn't work. Please help...i'm lost without it!!!