Mint Mobile vs. Ultra Mobile: Which is better for you?
Cons Unlimited international calling only free with multi-month plans Both carriers offer great value on prepaid plans. With the T-Mobile network powering both, the biggest difference between the two will be how much data you need and how many months of service you're willing to buy. Ultra Mobile has a wider range of plans and will likely have something that works for any user, but Mint Mobile seems to hit the mark for what the average smartphone user needs. Mint Mobile also gets the price right if you're willing to buy a few months upfront. Mint Mobile vs. Ultra Mobile
Source: androidcentral.com