Fix Telegram "This Phone Number Is Banned" Error 406 (2025)

Updated: 11/29/2025

You try to sign in to Telegram, enter your phone number, and instead of a login code you see This phone number is banned, sometimes associated with internal error codes like 400 or 406. Even if you reinstall the app or change networks, the same message appears and you cannot reach your chats at all. This means Telegram servers have blocked that specific number for policy or security reasons, and no amount of simple password guessing or app restarts will lift it automatically [web:108][web:111][web:114][web:117][web:120].

Method 1: Understand What Type Of Ban You Have

Try logging in with a completely different phone number on the same device, if that new number logs in without problems, the primary issue is likely your original number, but if every number fails, your device or IP may also be flagged. Distinguishing these patterns helps you decide whether to focus on appeal steps or device cleanup first [web:111][web:117][web:120].

Method 2: Clean Up Your Environment And Avoid Common Triggers

Uninstall any third party Telegram clients, auto join scripts, or mass messaging tools from your devices and stop using them entirely. These apps often break Telegram rules and can cause both numbers and devices to be marked as abusive by the anti spam system [web:111][web:117].

Method 3: Request A Review And Plan A Safe Return

If Telegram does not lift the ban and you decide to create a new account with a different legitimate number, do so on a clean device without VPNs or automation tools, then join groups slowly and keep messaging patterns natural. Following these guidelines from the start greatly reduces the chances of running into another PHONE_NUMBER_BANNED or similar error in the future [web:111][web:117].