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The encryption is based on 2048-bit RSA encryption, 256-bit symmetric AES encryption, and Diffie–Hellman secure key exchange. Sent a picture without adding your usual filter or marking the text you wanted to highlight? Sent the wrong picture altogether? Telegram can help you out. The app allows users to edit photos and even replace them after you have sent it. Telegram’s core functionality is the same as most other messaging apps: You can message other Telegram users, create group conversations, call contacts, make video calls, and send files and stickers. However, there are a few specific features that make it work differently from other chat apps.

Telegram is a free instant-app service founded by people behind VK, which is Russia’s biggest social networking site, primarily focused on speed and user privacy. Initially released in August 2013, the app has managed to get over 400 million monthly active users. To find more themes, Android users can try the Themes for Telegram app. If you use an iPhone, have a look at the Telegram Themes subreddit. Chat folders Hide Your ‘Last Seen’ From Certain Users

That’s far from saying Telegram will protect you from all privacy terrors the online world presents — you should check out our Android privacy guide for a broader look at that. Telegram just offers a good marriage of popularity and security for those with concerns over other messaging apps. Enable Auto-Night Mode To enable or disable this service, go to “Settings”, “Notification and Sounds”, and swipe down to the “Other” section. You will also find a “Repeat Notifications” option, which you can select as per your convenience. To set self-destruction timer, swipe right on the homepage, tap “New Secret Chat”, and add recipients. Now simply tap the clock icon and set Self-Destruct Timer to the desired time limit (from 1 second to 1 week). The clock starts ticking the moment messages are displayed on the recipient’s screen.

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