T-Mobile said the Personal CellSpot is available to its customers beginning today. The CellSpot is a Wi-Fi hotspot for in-home use that allows smartphones to make voice calls over Wi-Fi rather than T-Mobile's cellular network. This particular hotspot prioritizes voice traffic over data traffic and can hook into any existing home network. The idea is to provide better in-home voice service to customers where T-Mobile's network doesn't quite reach. The CellSpot is made by Asus. It costs $100 to own outright, but T-Mobile is allowing people to take one home if they put down a deposit of $25. All new T-Mobile smartphones will have Wi-Fi calling enabled moving forward. T-Mobile's existing customer base will be able to add Wi-Fi calling to their handset through a software update, though T-Mobile didn't say when to expect it. Separately, T-Mobile customers will be able to send text and picture messages, and listen to voicemail via the Wi-Fi networks provided by GoGo in select airplanes. T-Mobile says more than 2,000 aircraft offer the service in the U.S. In-flight messaging is free to T-Mobile customers.


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