Easily add country codes to contacts.

PlusOne is a simple and professional app that can add a chosen country code to all of your contacts. When first opened, it scans all of your contacts and shows you a pie chart of how many do and don’t have country codes. After entering your country’s code, you have the option of backing up your contacts before adding the codes. This is definitely recommended as I ended up needing to restore mine. The problem was that the app has no intelligence. Many of my contacts had country codes in front of them, but this app added additional ones to those, making the numbers undialable. In the future, PlusOne could add the ability to change and recover individual contacts and also the ability to enter a different country code for certain specific contacts. As this is a first version, it’s a good start.

Creeos about PlusOne - Country Code Address Book Converter