Sold a 5c today to someone it was clean imei since there is no unlock yet for them and no need to sit on junk. They called sprint to put it on their network and did but the phone would not activate erased everything it asked for a sims! Funny think since its cdma right and no need for that sim wrong there is a sims that comes with them from sprint that sims card is married to that phone somehow and yet still it was not the original one that went to that phone but another one. The buyer had to go into his account and add the sim card to it before it activated and worked. To me that is weird and maybe a start for a solution for these crappy things for something that will work on all ios after updating