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! While you can receive/send files irrespective of their type and size, you can disable automatic media download and auto-play media to save mobile data. This way, you can also avoid downloading unnecessarily large files. However, Telegram only uses this encryption in calls and in its “secret chats” feature, not in regular chats. Those are only encrypted client to server. Meanwhile, WhatsApp, the supposedly less secure service, has used end-to-end encryption in all messages, calls, and video calls since 2016.
To use a proxy server in Telegram, open Settings > Data and Storage > Proxy Settings. Enable Use Proxy and you'll need to fill in all the required information to add it. You can find server info for this online if needed. App Customizing Options and Themes Turn off/on the auto-night mode Use These Great Telegram Features to Become a Pro
Besides these security enhancements, you can set a self-destruct timer of duration varying from one second to one week. Furthermore, you or the other person cannot forward messages that you receive within the Secret Chat and taking screenshots (or screen recordings) is completely blocked. Currently, the Secret Chat is limited to conversations between only two people and Secret Groups are not supported within Telegram. Send Uncompressed Media without Changing the File Extension Today is an important day in the history of Telegram – marking not only a new milestone, but also the beginning of Telegram's sustainable monetization. We believe that Telegram's development should be driven primarily by its users, not advertisers. This way our users will always remain our main priority. Read More On This Topic
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