Big holiday weekend, with lots of big events, but I want to write about trading in iPhones. We started this weekend off with two iPhone 4s. Hers was a 16 gigabyte black ATT iPhone 4. Mine was a black 32 gigabyte model.I read that you could trade your iPhone in at the ATT store, so took all of the accessories and her iPhone and went to our local store. The sales associate at ATT had never heard of trading in a phone for a new one, or getting any kind of deal if you left your old phone and took their new one. Knowing that such a thing existed, I asked her to make sure because we would go somewhere else if she couldn’t figure it out. After checking, she found out that if they fill out a form online with a third party (FlipSwap I think) they would take your iPhone, sell you a new one for retail value, and within four weeks you get an ATT store credit for an amount that they don’t reveal to you at the time you are buying the new phone. Somehow I resisted the temptation to take that offer. We decided to just get one new phone and take our chances with the market.Getting the new phone was really simple. Once we got home we just connected it to the iTunes account and restored it from that morning’s backup of the old phone. The only wrinkle was that all of her playlists were there in name, but they were empty folders. We turned off iTunes match and that ended that problem.I put the old iPhone 4 on craigslist, with a simple ad and no picture. I asked for 190, since the 4s we just bought was only 299 and a 16 gb just like the one we were selling would only cost 199, with a two year commitment. Got my first bite within ten minutes. Within and hour eleven people had responded. The first guy came over about an hour later and bought it, no haggling. Im thinking I didn’t ask enough. People are still answering that ad.After that I decided to make sure I was eligible for the upgrade price on the second phone (I was) and if so, I would try the same thing with it. This phone was a 32 gb model and I wasn’t so sure that there would be the same kind of response for it. Since I paid 250 for it refurbished from Apple back when there were a lot of them turned back in due to the antenna issue, I felt like I should as more for it. I made this ad for 290 dollars. Ten minutes later it was sold. How much are these things worth! I immediately pulled that ad down from craigslist, but I still got seven responses.I forgot to back up this phone before I sold it so the transition wasn’t so smooth..Even then it went really well. Since we use iCloud and iTunes match I just had to put my passwords into my email accounts for them to synch. Since Gmail two step authentication is set up on my system setting gmail up on the new phone somehow screwed up the password on my iPad. I had to fiddle with the iPad to get it working again.