Mobile dialer and hosted vpn solution
For pc dialer, visit https://goo.gl/hs9JUs
For low bandwidth or slow network, SmoothDialer-Lite will be perfect for you.
To download SmoothDialer-Lite, visit https://goo.gl/hs9JUs
or, install it directly from https://play.google.com/store/apps/details?id=lite.SmoothDialer