SipAgent has found a new home and will live on as 3CXPhone. It has the same features (and more), is still free, but is professionally supported by 3CX.To read more user comments click here:
Checkout the demo of the 3CX Android phone in a previous life as the SipAgent product below.
My expectation is that with 3CX marketing and financial muscle behind the 3CX Android Phone (aka SipAgent) it will move ahead. So, welcome to a free, Android based SIP soft phone!