I am switching jobs and now need to get my own personal phone in the next few weeks. I am going to sign up for Verizon for the coverage but want to wait for the upgrade for the 5S in October-ish. Should I buy a used 4S on craiglist, then sell in a couple months after I have bought the new phone? What are good, cheap phones or a good place to buy a cheap phone and then sell. Any advice appreciated! Thanks!!