Just bought and a bit disappointed so far but perhaps it's user error.
1) can I use the stock dialer to make calls on Groove?
2) if i use the Groove dialer, how do I hang up the call?
Sent from my SCH-I500 using Tapatalk
By default when you make a call using your native dialer it will now ask whether to use GrooVe IP or your mobile network. If you choose GrooVe IP then calls will go through the app.
Not sure I understand your second question. When you're in a call you should see 5 buttons on the bottom. Hang-up and dialpad and then bluetooth, mute, and speaker.