This number cannot use WhatsApp, what should I do - briefly?
If you are unable to use WhatsApp with a particular number, it is likely due to a violation of the platform's terms of service or an issue with your device or connection. To resolve this, ensure your phone number and device meet WhatsApp's requirements and that you have a stable internet connection.
This number cannot use WhatsApp, what should I do - in detail?
If you are encountering the issue where your phone number cannot use WhatsApp, there are several steps you can take to resolve this problem.
Firstly, ensure that your phone number is correctly formatted. WhatsApp requires a valid international format for phone numbers, which typically starts with a plus sign (+) followed by the country code and then the local number. For example, if your number is from the United States, it should be written as +1234567890.
Secondly, check if your phone number is already registered on another device or account. WhatsApp allows only one active session per phone number. If you are trying to use a number that is already in use on another device, you will encounter this issue. To resolve this, you can either deactivate the WhatsApp session on the other device by going to Settings > Account > Delete my account or ask the person who currently has your number registered to deregister it from their device.
Thirdly, verify that your phone number is active and capable of receiving SMS messages. WhatsApp requires a working phone number to send you a verification code via SMS during the setup process. If your number is inactive or unable to receive SMS, you will not be able to complete the registration. Contact your mobile service provider to ensure that your number is active and can receive text messages.
Fourthly, make sure that WhatsApp is compatible with your device's operating system. WhatsApp supports various platforms, but there are specific requirements for each. For iOS devices, you need iOS 9 or later. For Android devices, you need version 4.0.3 or higher. If your device does not meet these criteria, you may experience issues using WhatsApp.
Lastly, if none of the above steps resolve the issue, consider contacting WhatsApp support for further assistance. They can provide more tailored advice based on your specific situation and help you troubleshoot any underlying problems that might be preventing your phone number from being used with WhatsApp.