Launch the Telegram app on your device and navigate to Settings -> Data and Storage. While you can send uncompressed media in other messaging apps, you have to convert it in another format like EXE or PDF. Telegram, however, allows you to send uncompressed video and images directly (without converting them into another format). It saves you a lot of trouble. Appearance section in Telegram
Read also: How to protect your privacy using Android If you are a group admin on Telegram, Slow Mode is what you need to stop unnecessary spam and make the conversation more orderly. After you turn on the slow mode and choose the time interval, group members will have a restriction to send one message in the defined interval. Say, for instance, if you choose the time interval to be 15 seconds, after sending one message, the group member will have to wait 15 seconds to send another message. It will definitely raise the value of each member and individual messages. You can turn on Slow Mode by tapping on the Group name -> Edit (pen icon) -> Permissions -> Slow Mode. Perhaps the most important and the best feature of the Telegram app is its security. It is based on the MTProto protocol that is built upon time-tested algorithms. It enables high-speed, reliable message delivery on weak connections. To enable this go to Settings and choose “Privacy and Security” from the list. Next, tap on “Passcode Lock” under the Security heading, then set your password lock on!
Another great option in groups or channels is being able to pin messages. Tap a message and choose Pin to keep it at the top of the chat, where everyone can easily reference it. Should You Trust Telegram? Turn Off Notifications for Individual Contacts Similar options are available for sharing your phone number and profile photo. You can also select who can add a link to your account when forwarding messages, who can call you, and who can add you in groups.
Advanced Chat Options Slow Mode
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