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The encryption is based on 2048-bit RSA encryption, 256-bit symmetric AES encryption, and Diffie–Hellman secure key exchange. You can also customize your chat background image in “Chat Background” in Chat Settings. In order to protect your personal information, Telegram automatically terminates your old sessions after 6 months. However, you can choose to get rid of the old sessions sooner in order to further boost security.

Premium Faster Downloads Another security feature that adds usability is usernames. Instead of giving people your phone number, you can simply give them your username. This gives you better control over what information is out there, and how people can contact you in the future. This is a handy feature for users who want to save disk space. To access it, go to the “Settings”, “Data and Storage”, and then tap “Storage Usage”. You will find four options: keep media on your device for three days, one week, one month, or forever. Share Live Location

This is incredibly useful for keeping track of an important URL, getting an image to another device without cloud storage, or keeping a record of important information. Tap the title bar at the top to browse by media type and make it easier to find past messages you saved. In Telegram, you can adjust the color and background. If you like, you can even set up your own custom theme to make Telegram look exactly the way you like. In addition to these functions, you can enable in-app browsing that lets you open external links within the app. All these options are available under the “Chat Settings” section. Next up, tap Sound and then choose your custom notification sound located under the Telegram Tones section. Make sure to tap Done at the top right to finish. Interestingly, Telegram names your custom notification sound as Cloud Tone and also allows you to upload any audio as a notification sound for a chat.

Now, tap Profile Photo. Now, you have three options: Now tap on Notifications and mute the contact for either a custom period of time or forever. I generally leave it for forever.