Define their admin privileges with granular precision. Group permissions Set default permissions to restrict all members from posting specific kinds of content. Or even restrict members from sending messages altogether — and let the admins chat amongst themselves while everybody else is watching. File sharing Send and receive files of any type, up to 1,5 GB in size each, access them instantly on your other devices. Public groups Get a short link for your group and make it public, like t. This way, anybody can view the group's entire chat history and join to post messages.
Telegram groups are ideal for sharing stuff with friends and family or collaboration in small teams. But groups can also grow very large and support communities of up to , members. You can make any group public , toggle persistent history to control whether or not new members have access to earlier messages and appoint administrators with granular privileges. You can also pin important messages to the top of the screen so that all members can see them, including those who have just joined.
Channels are a tool for broadcasting messages to large audiences. In fact, a channel can have an unlimited number of subscribers. When you post in a channel, the message is signed with the channel's name and photo and not your own. Each message in a channel has a view counter that gets updated when the message is viewed, including its forwarded copies.
Data that has your back
You can add administrators to help you manage your group and define their privileges with granular precision. Android: Go to Group Info tap the name in the header — the pencil icon in the top right corner — Administrators.
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You can add your contacts, or using search by username. It is easy to migrate existing groups to Telegram by sending people an invite link.
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Anyone who has Telegram installed will be able to join your group by following this link. If you choose to revoke the link, it will stop working immediately. You can set up a public username on Telegram.
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Please note that people who find you will be able to send you messages, even if they don't know your number. If you are not comfortable with this, we advise against setting up a username in Telegram. You can set up a username in Settings and use the universal search box in the chat list to search for chats, messages, and usernames.
Once you've set up a username, you can give people a t. Opening that link on their phone will automatically fire up their Telegram app and open a chat with you. You can share username links with friends, write them on business cards or put them up on your website. You can use a-z, and underscores. Usernames are case-insensitive, but Telegram will store your capitalization preferences e.
Telegram and TeleGram is the same user. The username must be at least five characters long. If you are not comfortable with this, we advise against setting up a username.
Neither party will see another's phone number unless this is permitted by your privacy settings. This is similar to the case when you message a person who you've met in a Telegram group. Go to Settings and save an empty username. This will remove your username; people will no longer be able to find you via search. This will not affect existing conversations. We understand that certain usernames are part of an online identity for some of us.
If your desired username is already taken, we will be happy to help you acquire it for your account or channel, provided that you have that same username on at least two of these services: Facebook, Twitter, Instagram. Due to the fact that one account can register multiple bot and channel usernames, we reserve the right to recall usernames assigned to unused bots and channels, as well as openly squatted usernames.
If a scammer is pretending to be you, please contact NoToScam. Telegram is more secure than mass market messengers like WhatsApp and Line. We are based on the MTProto protocol see description and advanced FAQ , built upon time-tested algorithms to make security compatible with high-speed delivery and reliability on weak connections.
We are continuously working with the community to improve the security of our protocol and clients. We've got you covered. On top of this, secret chats are not part of the Telegram cloud and can only be accessed on their devices of origin. We support two layers of secure encryption. Server-client encryption is used in Cloud Chats private and group chats , Secret Chats use an additional layer of client-client encryption. All data, regardless of type, is encrypted in the same way — be it text, media or files.
You can find more info in the Advanced FAQ. See also: Do you process data requests? Telegram is open, anyone can check our source code , protocol and API , see how everything works and make an informed decision. Telegram supports verifiable builds , which allow experts to independently verify that our code published on GitHub is the exact same code that is used to build the apps you download from App Store or Google Play.
We welcome security experts to audit our system and appreciate any feedback at security telegram. On top of that, Telegram's primary focus is not to bring a profit , so commercial interests will never interfere with our mission. More about this below. You can check out the Cracking Contest Description to learn more. Any comments on Telegram's security are welcome at security telegram. Please note that we can not offer bounties for issues that are disclosed to the public before they are fixed.
Telegram can help when it comes to data transfer and secure communication. This means that all data including media and files that you send and receive via Telegram cannot be deciphered when intercepted by your internet service provider, owners of Wi-Fi routers you connect to, or other third parties. But please remember that we cannot protect you from your own mother if she takes your unlocked phone without a passcode. Or from your IT-department if they access your computer at work. Or from any other people that get physical or root access to your phones or computers running Telegram.
If you have reasons to worry about your personal security, we strongly recommend using only Secret Chats in official or at least verifiable open-source apps for sensitive information, preferably with a self-destruct timer. We also recommend enabling 2-Step Verification and setting up a strong passcode to lock your app, you will find both options in Settings — Privacy and Security. Logging in with an SMS code is an industry standard in messaging, but if you're looking for more security or have reasons to doubt your mobile carrier or government, we recommend protecting your cloud chats with an additional password.
Once enabled, you will need both an SMS code and a password to log in.
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You can also set up a recovery email address that will help regain access, should you forget your password. If you do so, please remember that it's important that the recovery email account is also protected with a strong password and 2-Step Verification when possible. Check this out for tips on creating a strong password that is easy to remember. Using a rooted or jailbroken device makes it easier for a potential attacker to gain full administrative control over your device — root access. A user with root access can easily bypass security features built into the operating system, read process memory or access restricted areas, such as the internal storage.
Once an attacker has root access, any efforts to mitigate threats become futile.
No application can be called safe under these circumstances, no matter how strong the encryption. Secret chats are meant for people who want more secrecy than the average fella. All messages in secret chats use end-to-end encryption. This means only you and the recipient can read those messages — nobody else can decipher them, including us here at Telegram more on this here. On top of this, Messages cannot be forwarded from secret chats.
And when you delete messages on your side of the conversation, the app on the other side of the secret chat will be ordered to delete them as well. You can order your messages, photos, videos and files to self-destruct in a set amount of time after they have been read or opened by the recipient. The message will then disappear from both your and your friend's devices.
All secret chats in Telegram are device-specific and are not part of the Telegram cloud. This means you can only access messages in a secret chat from their device of origin. They are safe for as long as your device is safe in your pocket. Remember that Telegram secret chats are device-specific.