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Unlimited free calls on 15GB/30 Days International Data Pass and Wi-Fi Calling
I was told by a retail sales rep at a T-Mobile retail store today that unlimited free calls to/from/within Simple Global countries on International Data Pass only works on Wi-Fi Calling and that with...
WiFi calling is thru data line, not voice line. So it should be totally free (this depends on your plan too, if you have unlimited calling within the U.S.)
I was traveling and working remotely around the globe for last 10 years (Taiwan, Japan, Singapore, Thailand, Maldives...etc) Never receive any charge on Wifi Calling. There is one time I was on the phone for over 4 hours!
But be aware that iPhone sometimes dropped out from Wifi Calling connection. There were couple times before I try to make the call, I noticed my U.S. number’s signal didn’t say ‘T-mobile Wifi Calling’ at the end. I had to turn off/on Wifi connection on the phone and wait till it registered the Wifi Calling.
I used 15GB global pass in Japan and it's works very well. The problem I had was that there is not a way that I can check how much data I have used, until I got a text message from T-Mobile saying I had used up 80% of the 15Gb, but it was within 13 days! I tried to save the usage but still used up all within 20 days. Then the most frustrating thing, even I decided to purchase a new 15 GB global pass, it won't help because T-Mobile only waits until your 30 days expires before activating a new pass! I am still looking for a solution, now I can only use low speed data, calls are free ubtil the end of 30days.
