Receive calls on Wi-Fi via Google Voice I don't have good cell reception in my house and I'd to have my Google Voice number forward to my phone on Wi-Fi when I'm home.  Can I just use Google Voice or do I need a third-party app to do the connection?
You need a third-party app to recieve Wi-Fi calls.

Two popular apps are GrooVeIP (paid &amp; free) and Talkatone (paid). You could also set up Sipdroid (free), which will set up the SIP forwarding using pbxes.com. Or you could use a number of other SIP apps and set up forwarding yourself, but that gets a bit convoluted.