T-Mobile is offering 200 MB of data every month for your tablet for life for FREE. You don’t need to be a paying T-Mobile customer and there’s no annual service contracts. Just use an unlocked tablet you already own on T-Mobile’s nationwide 4G LTE network. A T-mobile  SIM card is required to activate a Mobile Internet account which can be picked up at a T-mobile store for a small fee or sometimes even Free.