Short answer: You choose. Long answer: All Mint Mobile plans allow you to choose how much 5G • 4G LTE data you need each month—4GB, 10GB, 15GB or Unlimited (first 35GB at 5G • 4G LTE speeds) data. When you hit your data limit, we don’t cut you off, we just slow it down. If you need more data, then you can purchase a once-monthly data add-on in your account. Or, if you find you are hitting the limit each month, simply upgrade your plan to the next data level at any time.