Noticed a new Feature on my EVO today or maybe it was always there and I over looked it
WIFI Calling
Settings > Call > Internet Call Settings > For All Calls
I just called my Sister with a Nexus S to try it out in my Parents basement No Cell Service gets down there at all, I changed her settings to the one outlined above and she now has perfect service in the basement....and she noticed that outbound calls do take a tad longer to connect than when in other parts of the house with perfect Sprint service and being on Sprint....
I think this update came with the Gingerbread update
WIFI Calling
Settings > Call > Internet Call Settings > For All Calls
I just called my Sister with a Nexus S to try it out in my Parents basement No Cell Service gets down there at all, I changed her settings to the one outlined above and she now has perfect service in the basement....and she noticed that outbound calls do take a tad longer to connect than when in other parts of the house with perfect Sprint service and being on Sprint....
I think this update came with the Gingerbread update