How to add international contact for easy calling in iPlum?

You can always select the desired country in iPlum Keypad & enter the number without country code. That FAQ is here.

But if you dial a number frequently and don' want to choose the country icon each time, this is how you do:
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1. iPlum conveniently shows your device phone book contacts in iPlum app.  You can create a new contact or edit an existing contact in your device Phone book and it will show up in iPlum contacts.
2. Enter the number with plus sign, country code and number.  Example for Australia (country code 61) enter +61xxxxxxxxx).  Save it.
3. Simply select that contact from Contacts in iPlum app & click phone icon.  It will show you the keypad with number & country pre-filled.