The next step is to enter the confirmation code that you received. Once you've done this, your account will be deactivated, and you'll have 30 days to reactivate it if you change your mind. After the 30-day period, your account will be permanently deleted, and all your messages and data will be removed.
How to Delete Telegram Account on iPhone - YouTube
It's worth noting that deleting your Telegram account will also remove all your messages, groups, and contacts. So, if you're planning to come back to the app, you might want to consider deactivating your account instead of deleting it. However, if you're sure you want to delete your account, just follow the prompts, and it will be taken care of.
