Mint Mobile Coupon Codes Mint Mobile is a traditional Big Wireless and prepaid plans you are used to, our phone plans give you more flexibility and value, plus the blazing fast nationwide 4G LTE coverage and unlimited talk and text you expect. You do not need a fancy (cough expensive) new phone, either just grabs a new Mint Mobile GSM SIM card and you are ready to go! Mint Mobile gives 7-day money back guarantee, available on all of our plans. There are no buildings to maintain or storefronts to drive up the cost. Our all-digital footprint lets us pass the savings on to you!