I have an iphone 4 with my Verizon account and have been happy with it, about a year overdue for an upgrade though. I wouldn't mind upgrading, it's just the 150. or 200. dollar fee plus upgrade fee, new case etc has slowed me up a bit. I'm happy enough with this iphone 4, although it's only 8GB. I use this phone a lot for my work, creative ideas and communication with clients. I logged into Verizon today and found they have certified pre owned iPhone 5s for 49. dollars. Or a 32 GB one for 99. dollars. I was hoping to get some thoughts from you helpful people on this. Would you shy away from a CPO phone? Or no worries? I could always reactivate my iPhone 4 i suppose, and send this back if it didn't work right. Thanks so much for any replies.