Delete contact
Telegram has a list of hidden and server-oriented audiences; This means that if you have saved contacts on any device you have already activated your account with, they will be saved on other devices connected to your Telegram account, even if your device is new and has no previous contact! This is both an advantage and a great weakness. Its big weakness is the inability to remove it from the Telegram server, which is eliminated by using the following trick. To delete the desired contact, touch the contact's image on the chat page with him. Then, when the contact's personal information is opened, tap the three-dot mark at the top right of the screen, and then tap Delete to permanently remove the contact from your friends list.
Complete deletion of your previous account and activities in Telegram
If for any reason you want to delete your Telegram account, just go to https://my.telegram.org/deactivate and enter your mobile number and click Next. At this moment, a message will be sent to your Telegram account containing a password. Now just enter the received password in the Passwords field and click on Sign In. You will now be taken to a page where you will be asked the reason for deleting your Telegram account. Just type I do not use Telegram sometimes (or anything else) in the Why are you leaving section and click Done. Now to be sure, you will be asked a question that you must select Yes, delete my account. Now your account and activity history in Telegram will be completely deleted.
Delete profile pictures you have used before
You have probably noticed that you can always see the avatar or profile of your friends in Telegram, and you can even see older images of some of them that were previously intended for their profile. But if you do not want users to see your previous profile pictures, there is a small trick. To do this, whenever you decide to change your profile picture, first delete your previous photo and then select the new photo. To delete your current photo, go to the settings section and click on the camera icon and select Delete photo. To select a new image, go to the settings and click on the camera and select the new image. In this case, your previous images will no longer be visible to others.
