QuCall

QuCall (Quick Call)
This application enables you to prefix the phone number with IDD code and dial that number.
In some cases you need to prefix the international number with IDD code and then dial the number. This application saves the time and effort of prefixing the code to a contact number before making a cellular call.
You can mention if we you want to disable the prefixing of the IDD code, and you can configure the IDD code to be prefixed.

Please Note that application DOESN'T MAKE IP CALL; it's a NORMAL CELLULAR CALL.

For example:
If you want to call an International number +91 1234567890 and if The IDD code to be prefixed is 0011.
Using this application you can select the contact from contact list and with a click of button the prefixed number i.e 0011 911234567890 (code contactNumber) will be dialed.

Please Check improved version of this app: IDD Calling App in Google Play Store.