Detailed description:
The "Phone number must be non-empty" error in Telegram occurs when the user fails to enter their phone number during registration or login. Telegram requires a valid phone number for account verification and security purposes. The Telegram API processes this information to verify the user's identity and allow access to the account.
The cause of this error is the absence of a phone number in the input field. This can happen either during manual entry or when using automation software where the phone number is not properly configured. This error is directly related to the security measures of Telegram and the API platform that handles authorization requests.
Causes of the "Phone number must be non-empty" error:
1. The user did not enter a phone number during login or registration.
2. The phone number was not set up in the automation software used with Telegram.
3. The phone number format is incorrect, containing characters other than digits.
Solution for the "Phone number must be non-empty" error:
To fix this error, ensure that you have entered your phone number in the correct format, without spaces or extra symbols. Here are a few steps to resolve the issue:
1. Enter your phone number. Make sure to input your phone number in an international format (e.g., +19991234567).
2. Use only digits. The phone number should contain only digits, and possibly a "+" symbol at the beginning for the international format.
3. Check your software settings. If you are using Telegram automation software, make sure the phone number is correctly set in the configuration.
The "Phone number must be non-empty" error is tied to Telegram API's requirement for a valid phone number, which is essential for the proper operation of the platform and account security.