Telegram's banned phone number may be caused by a violation of the terms of service. Telegram has terms of service that users are expected to follow.
Telegram does not allow users to register multiple accounts with the same phone number. Each Telegram account must have a unique phone number associated with it.
If you try to use a virtual number that can not complete the Telegram verification process, your phone number may be banned.
Telegram takes security and user safety very seriously, and it has policies in place to protect users from spam, fraud, and other abusive behaviour.
In some cases, a phone number may be mistakenly flagged as banned due to technical issues with Telegram’s system.
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