Michael Sievert T-Mobile began in 1994 as Voice Stream Wireless PCS, a subsidiary of Western Wireless.In 2002, Voice Stream changed its name to T-Mobile USA.It works on a wide range of devices, including smartphones, tablets, in-vehicle infotainment (IVI) devices, smart TVs, PCs, smart cameras, wearable computing (such as smartwatches), Blu-ray players, printers and smart home appliances).Its purpose is to offer a consistent user experience across devices.Roaming ensures that a traveling wireless device (typically a cell phone) is kept connected to a network without breaking the connection.In wireless telecommunications, Roaming is a general term referring to the ability for a cellular customer to automatically make and receive voice calls, send and receive data, or access other services, including home data services, when travelling outside the geographical coverage area of the home network, by means of using a visited network.In mid-2016, the company announced that it would be introducing 5G, with amazing speeds of 12 gigbits per second.
Tizen roots back to the Samsung Linux Platform (SLP) and the Li Mo Project and in 2013 Samsung merged its homegrown Bada project into Tizen.
For example; should a subscriber travel beyond their cell phone company's transmitter range, their cell phone would automatically hop onto another phone company's service, if available.
Using another phone company's service can be done by using the subscriber identity in the visited network.
This company is the US operation of T-Mobile International AG, a subsidary of Deutsche Telekom.
In 2011, AT&T announced plans to merge with Deutsche Telekom.