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To lock a chat go to Settings->Privacy and Security->Passcode Lock and enable it. Once you create a passcode and enable it, you will be able to lock and unlock your chats by tapping on the lock icon at the top right of the app. This security-focused messaging app allows you to register a unique username so that people can message or add you to groups without necessarily knowing your phone number. This way, you can keep your number private. Prices start as low as Rs 2.5 per day

Buying a new 5G smartphone? Here’s what to keep in mind To make such a group or find people near you, swipe right on the homepage, tap on “Contacts”, and then tap on “Find People Nearby”. You will see a list of nearby people and groups sorted by distance. Unlimited personal cloud storage To change the number you use with Telegram, open Settings (which is inside the left menu on Android). On iPhone, in the next menu, tap Edit in the top-right corner. This step isn't necessary on Android.

Telegram is one of the feature-packed messaging services out there, armed with some neat perks that can put rivals like WhatsApp and Signal to shame when it comes to functionality. While basic Telegram features like the ability to edit messages after sending them are well known, here are some lesser-known, yet incredibly useful things the app can do that could come in quite handy. Telegram lacks the Stories feature of some competing messaging apps which lets you post images or short videos without messaging a contact directly. Admittedly it isn’t an essential feature for most people. Users on macOS now have a quick way to generate a custom profile picture – choose any sticker or animated emoji as the focus, and add a colorful gradient background. You can set one for your own profile, or as a group or channel photo – making it easy to create a themed icon for chats without searching for stock photos. Next up, tap “Mute for” in the menu and then choose the desired mute duration in the pop-up menu. If you want to choose a custom date and time, tap Mute until and then set the date and time.

Telegram API: lets you create your own customized Telegram clients. You can read Telegram’s open-source code to know how the platform works. Secret Chats