Hello snrb!
Thanks for developing this program; I picked it up and found it helped a lot for keeping in touch while overseas.
However, I'm having problems with it on the data network. It works perfectly on wifi, but when I try using it on the go, it tell me:
"Can not sign in, no valid network. Please check your internet connection and try again."
I'm in an unique situation in that I can get perfect data connectivity with the provider I'm using (data-only B-Mobile, an MVNO of NTT Docomo in Japan), but because of some issues with the SIM card (not well documented, exists on almost all non-Japanese Android handsets for this provider), the status bar will show (both!) the no signal icon and the G (up/down) icon, signifying GPRS is working (the lock screen will similarly show "no signal" quite largely but hitting up the secret menus for Phone info will show -83dBm 15asu, very much usable). That said, it's not just GPRS; I've tested the connection to about 2716kbps/365kbps at 184ms, which should be your usual 3G speeds.
Is there some type of hardcoded check only for the network? All other applications work fine with this data connection--Gmail, Talk, Opera Mini, Maps, etc.--and I'd really appreciate it if GrooVe IP worked too!
Thanks!
Edit: I forgot to mention, I do have "Allow 3G/4G Calling" set to enabled.