FREE WiFi Calling Service Add-on for T-Mobile Postpaid Plans

I currently have an HTC Sensation (Android phone) and a 2 GB data plan on my phone. Like many others, I was deceived when I first bought the phone; I was told I could use WiFi calling and it wouldn’t count against the amount of minutes on my voice plan (which is why I decided on the particular phone, the voice plan, and the data plan I got). This turned out to be the exact opposite of the truth and I ended up going over my voice plan and getting a huge overage charge the first month.

Well I just called T-Mobile for an unrelated issue and figured I’d ask about the info I saw on this post. I was told that in order to get free unlimited WiFi calling that wouldn’t count against my minutes, I’d have to upgrade to a 5 GB data plan for another $15 a month. For that much money, I might as well upgrade to an unlimited voice plan for another $10 a month.

I'm sure the fact that I have a cheapo "preferred" plan is the reason why I'm unable to get this feature to work. So unless anyone has any information I can use to coax T-Mobile with, I guess I’ll just have to stick with way too much texting :-/


I followed your picture-by-picture instructions, and it still wasn’t listed as an option under “Extra Minutes”.

Anyone have this “retentions”/loyalty number (do you just call the regular 1-800 number and ask for that department)? I’ve been a reliable T-Mobile customer for 3 years now and through one contract renewal, so maybe they'd consider me "loyal"

I have a radar and it does work.

The other benefit of T-Mobile WiFi calling is that, when you are traveling out of the country and can get a WiFi signal, your calls back to the USA are just regular calls - not roaming because, as far as T-Mobile is concerned, you're still back home.

oh OP scared me a bit. I'm thinking about going with the prepaid plan, and with no wifi calling ?!?!
but what OP is saying is you wont be able to call via wifi with that phone number or for that matter directly.

In order to call via wifi on a prepaid plan, you simply use a third party app like Groove IP, which will use google voice to make free calls over wifi.

i know the first part sounds a bit confusing, i can't really explain it even though it's very easy. ugh, please correct me though

EDIT: oh my, just realized this thread is 7 pages long, i'll have to read it all. sry if my post is a repost xD

Anyone confirm this? I was told otherwise on the phone. TIA

RE: Using WiFi calling overseas.

I travel overseas a lot and use it all the time. Works fine in places like Korea and Japan (where they don't even have GSM service), Albania, Latvia, Canada, Mexico, Europe. As long as you have a WiFi signal and have the WiFi calling icon showing, you're on T-Mobile's USA network. Even works for text messaging. You don't even need a cellphone signal - just WiFi. One other thing, if you use WiFi calling to call the country you're in, it's a long distance call (still might be cheaper than roaming though).

Thanks a lot. Thats what I wanna know. How dos it work for text messaging?

And what is roaming?