T-Mobile USInc. will start offering its existing and new Simple Choicecustomers a new SamsungElectronics Co. Ltd.'s Galaxy smartphone from July 13.

The U.S. carrier will offer families 4 lines with up to 6 GBof LTE data per line for $30 a line per month. Each additional line will cost$20 more per month. All customers signed up for a 24-month no-cost financeagreement will get a free new Samsung Galaxy On5, the company said.

The company will offer 10 GB of high-speed data for $40 amonth per line for first four family members, with additional lines costing $30a month. All customers signed up for this offer will be eligible for a freeSamsung Galaxy J7. Customers will also be able to roll forward up to 20 GB ofunused data per line for up to a year.