Friday, September 26, 2008

T-Mobile G1 - No UMA!

After my last post regarding Android and the G1, it occurred to me that T-Mobile and/or HTC decided not to include support for UMA on the device.  That's a real bummer, as I am finding UMA to be a great feature on my Blackberry 8320.  Quick simply, UMA allows one to make mobile calls and related data access (e.g. text messaging) using Wi-Fi, and also allows one to seamslessly roam between GSM/GPRS networks and Wi-Fi, particularly handy in cases where cellular coverage may be spotty.  T-Mobile is the only US-based carrier that supports it, and they've made it available on several of their newer devices.  In my particular case, I use the UMA feature quite extensively whenever I travel overseas.  While in my hotel room or overseas office I simply disable access to the local mobile network and use Wi-Fi exclusively.  This means I can make mobile calls back home without incurring any roaming charges since T-Mobile doesn't appear to have the ability or desire to trace calls by IP address.  And this also means all of my text messages and Blackberry email do not incur any data roaming charges either.  I've also read on Blackberryforums that some users are claiming that T-Mobile doesn't even log some of the UMA calls, so those users aren't even being charged for the minutes against their account.  So...I'm wondering if the UMA ommission from the G1 was a major oversight on T-Mobile's part, or maybe a purposeful ommission given the folks like me that leverage it in order to save on their monthly charges.
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