After downloading and installing the call4u Dialer, open the application and follow the simple wizard to set-up the call4u Dialer:
VoIP Calls via Wifi, 3G / 4G, edge or UMTS.
You will just need to select the Contact you want to call or enter the number manually in the DialPad. The call4u Dialer will take it from here.
The same call4u dialer low rates for international calling apply if you use the call4u dialer.
The call4u Dialer does not require a data subscription or a Wi-Fi connection, however if a data connection is available the application might require a minimum amount of data traffic to update from time to time.
•Call from Android phone native Contacts