Why does WhatsApp say Invalid phone number - briefly?
WhatsApp may display the message "Invalid phone number" due to several reasons including incorrect formatting or the number not being registered with WhatsApp. To resolve this issue, ensure the phone number is entered in the correct international format and that it is a valid mobile number capable of receiving SMS messages.
Why does WhatsApp say Invalid phone number - in detail?
The message "Invalid phone number" on WhatsApp typically indicates that the phone number entered is not recognized by the platform for registration or verification purposes. This issue can arise due to several reasons, each of which requires a specific resolution.
Firstly, it is essential to ensure that the phone number format is correct and adheres to international standards. The standard format includes the country code followed by the local phone number. For example, for a US-based number, you would enter +1 followed by the area code and the local number. Omitting the plus sign or entering an incorrect country code can result in this error message.
Secondly, the phone number must be active and capable of receiving SMS messages. WhatsApp uses a verification process that involves sending a code via SMS to the provided number. If the number is not active, disconnected, or blocked from receiving SMS, the verification will fail, and you will see the "Invalid phone number" message.
Thirdly, the phone number must not already be registered with WhatsApp. Each phone number can only be associated with one WhatsApp account at a time. If the number is already in use by another device or account, you will encounter this error. In such cases, it is crucial to either deregister the number from the existing account or use a different number for the new registration.
Additionally, network issues can sometimes cause this error. If your mobile network is experiencing problems or if there are restrictions on SMS services in your region, WhatsApp may not be able to send or receive the verification code, leading to the "Invalid phone number" message.
Lastly, technical glitches within the WhatsApp application itself can also trigger this error. In such cases, restarting the app or even reinstalling it can often resolve the issue. If the problem persists, contacting WhatsApp support for further assistance is advisable.
In summary, encountering the "Invalid phone number" message on WhatsApp usually stems from incorrect formatting, inactive numbers, previously registered numbers, network issues, or technical glitches within the app. Addressing each of these potential causes can help resolve the issue and successfully complete the registration or verification process.