Unlimited free calls on 15GB/30 Days International Data Pass and Wi-Fi Calling

wowotoe wrote:

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.

We have unlimited data, call and text plan and being charged for calls made to my next door neighbor with us at the rate of One dollar per minute/per call so so..  Called the representative and she said these are legitimate charges and the only way is to add state wide ban on the account which would cost 15 dollar per month per line and even then there is no guarantee that all the calls made through whatsapp to whatsapp will not charged.   She said if you started the call on wifi and move over to t-mobile data you will start being charged because T-mobile is providing the continuity.  They only solution representative provided was to stop calling from the lines which are generating charges.  Even the international Calling is banned is charged 93 dollars for a call.   All this appears wrong and there should be some class action suit taken again T-mobile.