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. Here, Telegram will give you some information about what happens when you change your number. Basically, all your messages will be moved to the new number and your new number will be automatically added to all your existing Telegram contacts, barring the blocked contacts. It’s way easier then re-sharing your new number with everyone. To change the number, tap on the “Change Number”, enter the new number and follow the process on your screen. Telegram also supports hashtags. If you tap a hashtag, you can search across all of your activate chats for it. This makes it easy to find messages in the future or categorize information for yourself.
Telegram Premium includes new tools to organize your chat list – like changing your default chat folder so the app always opens on a custom folder or, say, Unread instead of All Chats. By subscribing to Telegram Premium, users unlock doubled limits, 4 GB file uploads, faster downloads, exclusive stickers and reactions, improved chat management – and a whole lot more. “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. Hide Telegram Profile Photo
In some countries, Sponsored Messages are shown in large, public one-to-many channels. These minimalist, privacy-conscious s help support Telegram's operating costs, but will no longer appear for subscribers of Telegram Premium. While it’s great to set a nice profile and win praise from your friends and loved ones, there are times when you might want to hide your profile from certain people. Fortunately, Telegram offers you the needed control over the visibility of your profile. Large file size limit As mentioned above, the use of usernames instead of phone numbers means your account isn’t tied to just one phone. This makes it easier to log in on other devices, allows you to have multiple accounts on the same device, and makes it so you don’t have to share your phone number with someone to add them as a contact in Telegram.
If you’ve already downloaded the app, here are some cool tricks that will help you use Telegram more efficiently. We’ve described the features and how to use them. While instructions are specific to Android devices, you can follow them on iOS devices too. If you're part of many Telegram chats—maybe you joined too many of the best Telegram channels—they can quickly become annoying. When this happens, you can always mute a chat without leaving it. This way, you can check it on your own terms instead of getting a ping for every new message.
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