How to Solve the "This Phone Number is Banned" Issue on Telegram and Prevent Future Bans

If you encounter the prompt "This phone number is banned" while logging in, it means your phone number has been officially banned by Telegram, and you won't be able to log in or log out of your account. Here's how to resolve this issue:

Solutions

Send an Appeal Email: Click on "Help" and send an email to appeal. It's advisable to send multiple emails after some interval, but avoid doing so too frequently.
Wait for a Response: If your account is still not unbanned after multiple appeals, please wait patiently for a few days. Do note that there might be no outcome.
Contact Official Support: You can also try contacting Telegram's official support via Twitter or email.
Outcome Varies: The situation differs for each account; some users successfully get their accounts unbanned, while others are not as fortunate.

How to Prevent Being Banned

To avoid your account getting banned, please follow these suggestions:

Do Not Send Advertisements: Never post advertising content on Telegram.
Avoid Private Chats: Try to avoid private chatting with strangers to reduce the risk of being reported.
Avoid Being Reported: Being reported in private chats or getting banned by an administrator can both lead to account issues.
Do Not Use Numbers from OTP/SMS Verification Platforms: Numbers from OTP/SMS verification platforms are often used by multiple people and might already be banned.
Use Virtual Numbers Cautiously: Some virtual numbers might have been used by others and carry a risk of being banned.
Choose Reliable Proxies: Ensure that the proxy service you use is trustworthy to avoid getting banned due to unreliable proxies.
Avoid Bulk Registration: Registering multiple accounts under the same IP or network may lead to a ban.
Be Mindful of Group Anti-Spam Settings: If a message you send in a group is mistakenly flagged as spam or advertisement, it could lead to a ban. If you know a group has "Strong Anti-Spam" enabled, it's advisable to leave that group.

Furthermore, it's recommended to regularly back up your Telegram data to prevent data loss due to an account ban. Account bans are often uncontrollable, so backing up is a wise move.