Well, as some of you may know I purchased a refurb iPhone 4 16 gb from AT&T on Tuesday. It arrived today and while it appeared to be in amazing condition it would later be proven that it is far from it. I set up the phone and of course AT&T sent me a sim card with the WRONG number on it.. So, before realizing that I did a couple test calls with Skype and tango and they worked as expected. The problem would be when I tried to make an actual call. I cut my sim from my Blackberry Torch and stuck it in the iPhone and it worked gave me full signal and all. Sent a couple text just fine but when making or receiving a call the speaker didn't work. The only way I could hear was if I turned the speaker phone one, thinking it was the sim, I put the old one back in and restored and it did not justice. Made an appointment for the genius bar almost immediately, went in and had to have the phone replaced - luckily with no hassles whatsoever. But it is now apparent to me that AT&T just takes returns and if they look good they just repackage them and send them back out. I'll be calling AT&T tomorrow and speaking with them about this inconvenience but everyone else beware. Trying to save a few bucks you may end up spending those same bucks you saved gassing up the car and driving to a crowded Apple store.