Detailed description:
The "PHONE_NUMBER_INVALID" error occurs when working with the Telegram API and is related to incorrect phone number entry. This error typically appears when the phone number entered by the user does not conform to the international format or is incorrectly typed.
Telegram requires that the phone number used for registration or login be entered in international format, starting with the "+" symbol followed by the country code. For example, a correct phone number should look like +123456789. An incorrect format, missing country code, or typing errors can trigger this error.
Reasons for "PHONE_NUMBER_INVALID" error:
1. The phone number does not conform to the international format.
2. The "+" symbol before the country code is missing.
3. The phone number is mistyped, with missing digits or incorrect numbers.
Solution for "PHONE_NUMBER_INVALID" error:
Step 1: Check the phone number you've entered and ensure it follows the correct international format.
Step 2: Enter a valid phone number starting with the "+" symbol and country code (e.g., +123456789).
By following these steps, you can resolve the error and continue working with the Telegram API. It's important to always verify the phone number format to prevent such errors in the future.