Finally a Call Prefixer valid for Mono and Dual Sim SmartPhone!
You can enable or disable individual sim and have different prefixes and suffixes.
No alteration or duplication of heading no need for data connection.
If you are abroad with a single click you can add the international code on the fly from your country to all the numbers that call.
Toll-free numbers are automatically recognized and their prefix is not added.
WhatsApp recognize your contacts.
Available languages: Italian, English, French, Spanish.