To lock your messages, go to “Settings”, “Privacy and Security” and tap on “Passcode Lock”. You will be asked to set a four-digit passcode and confirm it. Once you do that, you will find additional options to “unlock the app with fingerprint” and “auto-lock” it after a specific duration. Custom Theme Your Telegram 4b Learn more
You don’t have to start from scratch to make Telegram apps. TDLib (Telegram Database Library) makes it easy to develop feature-rich and secure apps. It takes care of local data storage, network implementation details, and encryption so that you can focus on design and interfaces. Premium Animated Profile Pictures Telegram supports two layers of secure encryption. Cloud Chats use server-client encryption while Secret Chats use an additional layer of client-client encryption. All content is encrypted in the same way — be it media, text, or files. If you are a group admin and it’s getting hard for you to manage the group due to the sheer amount of messages, you can use utilize the slow mode feature.
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. Under the Other section, tap Open Links in and then choose a preferred browser from the list. “Privacy” itself isn’t a particularly attractive product feature in online services. It can be nebulous: We can’t always feel or understand it, and sometimes it’s only when privacy is taken away that we take it seriously. Whatever your reasons for using Telegram, it's a solid messaging app. It makes for a great alternative to WhatsApp and SMS messaging, and Telegram is well worth using, especially if you can persuade your friends to join.
Public groups can now enable join requests – allowing group admins to review new members before approving them to write in the chat. Users who open the group can tap Request to Join, adding their request to a list that only admins can access. 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.
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