I have an iPhone 4S. When the next iPhone comes out, I intend to sell my 4S on eBay to help pay for the new phone. My question is, do I need to do anything special to my phone besides wiping the data before I send it to the new owner? Do I need to get it unlocked? Do I keep my SIM card or do I just leave it in there? Anything else I should know?
Thanks!