If you have an unlocked phone, you can port your number and move your phone over to Mint Mobile.
Brad's Deals Editor Michael,
Get three months of Mint Mobile'sPrepaid 8GB 4G LTE Unlimited Talk/Text Phone Service for just $20 per month and you'll get an additional three months for free. A new activation is required to take advantage of this offer. Normally, Mint Mobile's 8GB plan costs $35 per month, so you'll be saving $150 with this deal. After the six months are up, you can lock down the discounted $20 per month rate for an additional 12 months. Otherwise, the cost of this plan will revert back to $35 per month. A seven-day money back guarantee is included. Additional taxes and fees may apply.