T-Mobile, which has been known to support UMA in some of its phones, which stands for Unlicensed Mobile Access, may be backing off, keeping the list of supported devices to a select few. UMA allows users to make calls and send text messages over Wi-Fi, which makes overseas travel much easier.  UMA has been supported on BlackBerry devices, but has not yet made it to Android.

And it may not be coming to Android, at least anytime soon. Om Malik of GigaOm asked a T-Mobile representative about UMA being available for Android. The rep replied by stating that T-Mobile will continue to support four models: three BlackBerry devices and the Nokia E7.

This may not be good news for Android users, who would love to have access to this technology. Of course with texts you can use Google Voice over Wi-Fi, but we're still waiting for the ability to make calls. [GigaOm]