I have an iPhone 4 that I purchased within a month of release and used on ATT for 2 years under contract. I was able to unlock it last fall when ATT started to offer unlocks for those who have satisfied their contract. In December I switched to T-mobile and have been using the $30 prepaid plan. A couple of weeks ago I was on vacation near the beach. I was walking with my phone in my pocket when a wave came in. I didn't think my pocket got wet, but maybe enough salty moisture came up....or maybe some sand in my pocket, but since then my dock connector isn't working quite right. I cleaned it out as best as I could using some info I found on the internet. I can get it to charge/sync if I get the cable in just the right position. If I fully plug in the cable it won't do either...I have to have it slightly pulled out on one side. I am planning on waiting for the iPhone 5S or whatever is released next and will get the T-mobile version of that. I would like to sell my 4 for as much as possible to help cover the cost. I'm trying to balance what would be the optimum thing to do with my 4 now to get me by and get the most when I sell it. The phone is almost 3 years old, is in great cosmetic condition except for a slight nick on the upper left edge of the front glass...no crack on the screen, just a roughend edge from a fall the phone took to asphalt. I see my options as: 1.) Do nothing, put up with the slightly annoying dock connector and sell for whatever I can get later this year. 2.) Pay around $40-50 to get the dock connecter replaced. Found a place near me that will do it for a fixed fee. This would fix the most obvious issue but wouldn't improve the cosmetic nick or aged battery. 3.) Take my phone to Apple for an out of warranty replacement. I think I saw on here that that is $149....does that apply to a 32GB model as well? It would be a refurbished phone, but should be cosmetically perfect and have a new battery and dock connector. I would think this would get the highest sale value, but would it be worth spending the extra $100 to get it that way? I most likely would hold out on option 1 as long as I can and get any repair/replacement done just before selling. I would think that it would make sense to repair the dock connector at least before selling because a lot of people might be scared off by the flaky connection. My main question would be if it would be worth going all out to get a nearly flawless phone to sell? Also, if I get an out of warranty replacement, will Apple give me an unlocked one, since mine is now officially and legitamately unlocked? Or would it be locked to ATT since that is what I originally purchased? If that happens, what's the likelyhood ATT would unlock it now since I'm no longer a customer?