T-mobile allows cheaper calls through Internet

T-mobile has come up with a new concept to allow reduction of call plans overall cost, by allowing the use of alternative calling networks. What does that mean ? For a T-mobile user, if they have bought one of the 2 new handsets, and are either in a home wireless network or a Wi-Fi hotspot, they can move to using that mode of Internet access for their phones. This will typically prove to be much cheaper than the costing of a regular call plan.
Another plus promised in this new service (T-Mobile HotSpotAtHome) is the ability to get a much better coverage inside homes, something that a lot of customers typically complain about:

The service is the first time a cell phone carrier is using Wi-Fi to make calls. That could lead to a shift in the cellular industry as more operators begin to build dual-mode technology into phones, allowing people to cut down the cost of voice minutes.
To get HotSpotAtHome, T-Mobile customers will need to buy one of two $49 phones that can switch between cellular and Wi-Fi calls. In addition to paying for broadband, they will need to pay for the calling service, which can be added to cell phone service initially at $9.99 a month for unlimited Wi-Fi calls. After mid-September, customers will pay $19.99 a month to add the Wi-Fi service.. Family plans for up to five phones are available now for $19.99, then go up to $29.99 in September.

The handset is new, but the wireless router at home can be an existing router. There is switching between when a customer is making the call in a Wi-Fi area and then moves outside this network and onto the regular cellular network. People who have tested this service have found that it works well.