Yes, many carriers will allow you to re-up your contract if you are a good customer and ask nicely. I've done this about 3 times in the past, twice with AT&T fo

Yes, many carriers will allow you to re-up your contract if you are a good customer and ask nicely. I've done this about 3 times in the past, twice with AT&T for new iPhones, a full year early in each case, and once with Sprint.