thanks for the response. i'd never heard of "wifi calling" before, but on the tmobile board they're acting like it's something special that not all phones can do and it takes something special to set up even if your phone can do it... i've been using an iPhone 3G on at&t for the past three years and i've always been able to make/receive calls while connected to wifi and i never had to do anything special or set anything up
wifi calling is using wifi to make a call when in low to no coverage areas... not exactly what you were thinking which was using wifi for internet access while calling on the GSM or CDMA or whichever cell network
that would be pretty useful for the people in the more "rural" areas/ on the border of roaming and not roaming. myself included.
Calling over wifi - As Feelthesweetbea explained, there are two different 'features'
Can you make a call over the sprint network while you are connected to your wifi? Sure! Any phone will do that.
Can you make a call over wifi (not using sprint minutes)m while you are connected to your wifi? Not by default. On T-mobile, there are some phones that will let you do that. But not all. On Sprint, they do not have such a feature (unless you get the airave and pay the monthly extra for making unlimited calls over that)
You can instead get an app like GrooveIP that will let you make and receive calls over wifi (or even over 3g/4g if you have good data speeds). You'll need to get a (free) google voice # to use with GrooveIP though.
@Feelthesweetbea, if you don't have any service at home or work, why did you even select Sprint as your carrier? (Unless you moved after getting service). If I didn't have service at home or work, I'd have dropped Sprint a long time ago.
This article explains it nicely...
Republish Wireless, http://republicwireless.com/, and its $19 a month service, relies on it heavily. However, their phones (made specifically for them) do not have the same issue as T-Mobile where a call gets dropped once outside of the Wi-Fi hotspot range. They use Sprints network.
Apparently, other services are offering VOIP calling that is seamless with your regular phone service. We live in a house where sprint service is terrible, but have long contracts. If WIFI is available, our Internet is very fast and it would help immensely.