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Owners of public groups can enable join requests via Group Info > Edit > Group Type > Who Can Send Messages > select Only Members > enable Approve New Members. Lock Your Chats Add People Based On Your Location

Unlike mass-market messengers like WhatsApp and Line, Telegram is an open-source app. This means anyone can check the app’s source code, protocol, API, and see how it works and make an informed decision. Telegram offers plenty of options for customization to make the app feel like a truly personal experience. Here is the list of interface element you can change: Customizations Premium Premium Badges

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. Chat Folders Polls Live location & proximity alerts

While we are going to release more exciting features for Premium subscribers, we will keep implementing free features available for everyone, and do it faster than any other massively popular app. This update is no exception – it adds join requests for public groups, an animated screen for external sharing, improved bot descriptions, and more. Telegram Privacy Choices