4. Go Prepaid

Some carriers, including the Big 4, offer prepaid plans. If you don’t use your phone that much, you may be able to save a lot. If you are going with a new, budget carrier, check on their coverage.
Some will piggyback on larger carriers, others will leave you searching for bars. If you have a paid-in-full phone, you may be able to get a prepaid plan with your current carrier.