The most common reason why you cannot send or receive WhatsApp messages is a bad Internet connection. Please read this article to find out how to troubleshoot this.
If you are absolutely sure your phone is connected to the Internet, there are a few other possible reasons why WhatsApp messages are not going through:
- Your phone needs to be rebooted. Turn your phone off, wait 30 seconds, turn your phone back on.
- The contact you are messaging has blocked your number. Not sure how to tell? Read this article.
- You have not completed the initial verification process. Learn about verification on: Android | iPhone | Windows Phone | Nokia S40 | BlackBerry | Nokia S60 | BlackBerry 10
- The number of the contact you are trying to message on WhatsApp has not been entered correctly on your phone. Learn the correct format of each phone number here.
WhatsApp Support Team