I just moved to a new apartment and have no reception in my room, which is in the basement. I got a Google Voice number + Groove IP for calls. I don't mind having a different number for them because I almost never use the phone. The problem is texting, which I use constantly. I read that GoSMS Pro can be used to send texts via WiFi with my number, but I have not had any success with it. Can anyone recommend an app for WiFi texting that uses my T-Mobile number?