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Welcome to WhatsApp! This is a multiplatform mobile phone messaging service that uses your phone's internet connection to chat with other WhatsApp users.

1. Add the contact to your phone contacts
   • Enter the number the same as you would if you were to make a phone call to that person. Double check to make sure you entered the number correctly.
2. If this is an international phone number, do not use any exit codes or leading 0s. Start all international phone numbers with a + sign, followed by the country code. For specific examples and instructions, see this article.
3. Open WhatsApp and refresh your Favorites list (Select contact list on Android).

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