International prefix

International prefix and trunk prefix preferences are used for remove international prefix or add international prefix features in contact mass-edit actions.

For international prefix preference, use whole prefix including leading + or double zeros (e.g. +420, +1, 00421, etc.), depending on your habits or device capabilities.

Trunk prefix is a prefix used in some countries to make local calls when the phone number is not stored in the international format. Typical value is either 0 or 1. In most countries, this value is not used anymore.

For example, assume the international prefix is set to +421, and the trunk prefix set to 0. When applying the remove international prefix function to the number +421999888777, the result will be 0999888777.

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