I have visited Egypt three separate times over the course of the last two years. When I arrived the first time, tmo wifi calling was not working and I called extensively into customer service and somehow someone fixed it and it was good for at least 5 months straight then one day that stopped and wifi calling would only appear intermittently but I didn't have the time to call customer service to find a fix.
During my second visit, earlier this year, I very seldomly was able to get wifi calling and because of the extensive amounts of calls I made to ask them to fix it as they had it last year tmo flagged my account (I initially thought this but then a rep confirmed this) because all the reps I was talking to were just telling me to go complain to the Egypt internet provider. I tried that but they confirmed that they did not change anything on my account from last year.
I am currently on my third trip here and tmo wifi calling shows up intermittently again so i have to make my USA calls whenever it shows up on my screen which is inconvenient. I called in a tech guy and he removed the firewall from the router and almost immediately all three of my phones (2 iphones and a Samsung) showed tmobile wifi. that lasted a day or two then stopped. So, the tech guy came back and put the firewall back up and tmobile wifi appeared again on all three devices. now, a day later, it stopped. I have myself tried turning it off but that's not working. I just need help trying to figure out what settings my router needs to have because if I can just get the right settings I should have tmobile wifi. i am not technical. so i hope someone can break it down for me in simple terms that i can follow.
router is Huawei HG531 V1
tmobile wifi should work if the settings are right... just need the help getting there and many of the tmobile reps don't deal with international technical issues so it's a very hard thing to keep calling tmobile about this.