Mint SIM is an MVNO carrier that is a spin-off of Ultra Mobile. It first came to market with a unique offer: cheap smartphone plans, but you have to buy a year’s worth of data at a time. But now a new offer is on the table.
Mint SIM is lowering the rates even further, and has a new introductory offer. You can try the service before committing to a full year. New customers can buy three months of Mint service starting at $35, which is $11.67/month.
This is for a plan with unlimited talk and text and 2GB of LTE data. If you use up the 2GB, your data will be throttled for the remainder of the month. But throttling after a set amount of data is standard practice for many carriers offering “unlimited” plans.

As with other MVNOs (mobile virtual network operator), there is no contract or activation fee. Mint also uses T-Mobile’s network and works with any unlocked GSM phone. If you use your own phone, Mint will send you a free SIM card – you just pay a couple dollars for shipping. If you decide to stick with Mint, you’ll be able to buy other plans 6 – 12 months in advance.
There are a couple things to keep in mind though. Mint doesn’t offer any family plans, and you won’t get a refund if you cancel your service. If you decide to switch, you forfeit the rest of your balance.