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24-05-2009, 20:03
HKR - Go to umatoday.com to see a list of carriers that use UMA. I assume, if they wanted, they could prevent you from connecting to an IP outside your home country. Whether any carrier does - I don't know.
Stu and DRN - I look upon you two as the tech gurus here. Can I conclude that some (most?) smart phones, like Iphone and BlackBerry, are (theoretically) able to process voice calls via wifi connection as simply as making regular cell calls? If Blackberrys (Blackberries?) (and Iphones) can be made to do this, that alone would cover a large number of users.
I usually don't carry a computer any more when I travel because of the email features of the BB - which are very inexpensive.
Stu - I assume there is quite an investment in backend costs for UMA and would have to be installed by the underlying carrier in Estonia, Isle of Mann etc. If what I say about installing a Skype type app in a phone is feasible - that would be much easier to implement.
The supposed reason T-M made UMA available in the U.S. was to give users solid mobile service when at home - even if you lived in an area w. littlle or noo cell service. It also was a selling point to get users to ditch their landline since you can make unlimited UMA calls to anywhere in the U.S. for $10/mo.
...mike
Make use of T-M's UMA/wifi free calling from any place in the world with access to wifi. I use an LG G6, wife an S7)
A/o Oct 20, 2013 no need for intl prepaid as T-Mobile U.S. includes voice roaming at 20¢/min (in and out)., unlimited text (in and out), and unlimited data in 140+ countries.
My Plan -[6 lines] U.S. T-Mobile unlimited minutes (incoming and outgoing), unlimited text, fast data on each line. that $145/mo. total! . (In U.S. no surcharge for calling a cell.) If a line exceeds 2G of data in a month, pay $10 more for that line. [That only happens a couple times/year.
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