I have had this iphone4s since 07/02/13 and it has never worked properly. I can only receive imessages everywhere that I go. I cannot receive calls or text messages unless I am home since I have an airwave. I have been to my local sprint store several times and they 'fix' it but it only works during the time I am there and then nothing again. So frustrating.....My data service works because whereever I am it works, I get Facebook and Instagram notifications. My husband has an iphone4s too and his works fine, & we bought his used and mine is new.