If your long term contract is expiring check month to month options. We found them to be a lot more cost effective. And as this industry becomes more competitive the costs are going to come down even further.
So, think hard and weigh all options BEFORE you sign a long term contract
Buying a cell phone may be cheaper than getting a phone "free" with a long term contract
Unlimited phone, text, data prices now range from $30/ day if you live in a big city to $2/ day - for only the days you use the service
Compare this to the past of 2yr contracts and $100 + per month