USA wireless Carrier T-Mobile today announced Un-carrier 8.0 that introduces automatic rollover of high-speed unused data each month into a personal Data Stash. T-Mobile customers can use it when they need it for up to a year at no extra charge.

In addition, T-Mobile will start every Data Stash with a free 10 GB of 4G LTE data. Starting in January 2015, Data Stash will be automatically available at no extra charge to every T-Mobile customer – every individual, family and business – with a postpaid Simple Choice plan who has purchased additional 4G LTE data, 3GB or more for smartphones and 1 GB or more for tablets. 

T-Mobile also continues to grow its LTE footprint and now reaches to 260 million Americans coast to coast, expanding to reach an additional 10 million people in last 60 days. T-Mobile’s Wideband LTE now reaches 121 metropolitan areas across the country, giving customers more capacity and up to a 50 percent boost in speeds. Operator plans to reach 300 million people with its LTE network in 2015.   

T-Mobile also announced that it has deployed its newly acquired 700Mhz spectrum in Cleveland, Colorado Springs, Minneapolis and Washington, D.C. boosting network reach, improving in-building coverage and extending coverage well beyond major population centers.