Wal-Mart and T-Mobile announced Monday that they are joining up to offer a $30 per month prepaid 4G data plan. The plan, which has no annual contract, includes 5GB of data at 4G speeds, unlimited text messages and 100 minutes of talk. After the first 100 minutes, the company will charge 10 cents per minute.

T-Mobile, known for being a low-cost retailer, has pushed its prepaid market hard, and in a release from the company, T-Mobile retail vice president Amy McCune said that it is expecting demand for prepaid to double by 2015.

The mega-retailer is also expanding its line of T-Mobile phones to six. Users can buy the plan at Wal-Mart stores and on walmart.com, and it will be available starting Oct. 16.

Related stories:

More technology coverage from The Post

HTC Amaze 4G, Samsung Galaxy S II are T-Mo’s newest 4G phones

Samsung confirms Galaxy S II LTE, messaging system