What is the telegram app –

Telegram is a cloud-based instant messaging app that was launched on August 14, 2013, by Pavel Durov and his brother Nikolai. It quickly gained popularity for its focus on privacy, security, and features like encrypted messaging, self-destructing messages, and more.

Telegram’s privacy and security system:

1. End-to-end Encryption: Telegram uses end-to-end encryption for Secret Chats. This means that only the sender and the recipient can read the messages. Telegram itself cannot access these messages, nor can any third parties.
2. Secret Chats: Secret Chats are a specific type of conversation in Telegram that is designed to be more secure. They are not stored on Telegram’s servers and can only be accessed on the devices involved in the conversation.
3. Self-Destruct Timer: In Secret Chats, you can set a timer for messages to self-destruct after they’ve been read. This adds an extra layer of security to sensitive conversations.
4. Two-Factor Authentication (2FA): Telegram allows users to set up two-factor authentication, which adds an extra layer of security by requiring a one-time code sent to your mobile device in addition to your password.
5. Cloud-Based Messaging: While regular chats are stored on Telegram’s servers, they are encrypted in transit. This allows you to access your messages from multiple devices, but the encryption keys are kept on your devices.
6. Secret Chat Device Key Verification: In Secret Chats, you can verify the encryption key of the other participant using QR codes or a numerical code. This ensures that the person you’re communicating with is who they say they are.
7. Screen Security: Telegram includes an option to prevent screenshots from being taken during Secret Chats, adding an extra layer of protection against unauthorized access.
8. Passcode Lock: You can set up a passcode lock for the Telegram app on your device to prevent unauthorized access.
9. Privacy Settings: Telegram provides a range of privacy settings that allow you to control who can see your profile picture, last seen status and contact information.
10. Anonymous Forwarding: Telegram allows users to forward messages without revealing the original sender’s information. This can help protect the identity of the original source.
11. Reporting and Blocking: Users can report spam and block unwanted contacts to enhance their personal security.

1. Start a Secret Chat:
   • Open Telegram.
   • Tap the pencil icon (compose button) to start a new chat.
   • Select ‘New Secret Chat’.
2. Select Contact:
   • Choose the contact you want to start a Secret Chat with.
3. Verify Encryption Key (Optional):
   • You can optionally verify the encryption key of the other participant using QR codes or a numerical code. This step ensures that the person you’re communicating with is who they say they are.
4. Chat Securely:
   • Once the Secret Chat is established, you can now communicate with the assurance that only you and the recipient can read the messages.
5. Set a Self-Destruct Timer (Optional):
   • You can set a timer for messages to self-destruct after they’ve been read. This adds an extra layer of security to sensitive conversations.
6. Note on Forwarding:
   • Messages from Secret Chats cannot be forwarded to other chats, and screenshots are disabled for Secret Chats by default.

1. Open Telegram:
   • Launch the Telegram app on your device.
2. Start a New Chat:
   • Tap the pencil icon (compose button) usually found in the bottom-right corner to start a new chat.
3. Select ‘New Secret Chat’:
   • You should see an option labelled ‘New Secret Chat’ in the list of available chats. Tap on it.
4. Choose Contact:
   • Select the contact from your list with whom you want to have a Secret Chat.
5. Verify Encryption Key (Optional):
   • Telegram allows you to verify the encryption key of the other participant using QR codes or a numerical code. This step ensures that the person you’re communicating with is who they say they are.
6. Chat Securely:
   • Once the Secret Chat is established, you can now communicate with the assurance that only you and the recipient can read the messages.
7. Set a Self-Destruct Timer (Optional):
   • You have the option to set a timer for messages to self-destruct after they’ve been read. This adds an extra layer of security to sensitive conversations.
8. Chat Features:
   • Enjoy the features of Secret Chats, such as end-to-end encryption, self-destructing messages, screen security (preventing screenshots), and more.

1. Open a Secret Chat:
   • Start or open a Secret Chat with the contact you want to communicate with securely.
2. Type Your Message:
   • Compose your message like you normally would.
3. Set the Timer:
   • Below the text input field, you’ll see a clock icon. Tap on it.
4. Choose the Timer Duration:
   • Select how long you want the message to be visible before it self-destructs. Options usually include 1, 5, 10, 30 seconds, 1 minute, 1 hour, or 1 day.
5. Send the Message:
   • Once you’ve set the timer, tap the send button to send the message.
6. Message Self-Destructs:
   • After the specified time elapses and the recipient reads the message, it will automatically disappear.

1. Open Telegram:
   • Launch the Telegram app on your device.
2. Access Settings:
   • Tap on the three horizontal lines in the top-left corner to open the main menu.
3. Go to Settings:
   • Scroll down and select “Settings”.
4. Security and Privacy:
   • Under the “Settings” menu, find and tap on “Privacy and Security”.
5. Two-Step Verification:
   • Look for the option labelled “Two-Step Verification” and tap on it.
6. Set Up 2FA:
   • Tap “Set Password”.
7. Create a Password:
   • Enter a secure password that you’ll use for two-factor authentication. Make sure it’s something you can remember, but not easily guessable.
8. Confirm Password:
   • Re-enter the password to confirm.
9. Add a Hint (Optional):
   • You can optionally add a hint to help you remember your password. This is not mandatory but can be helpful.
10. Add a Recovery Email (Optional):
    • You can enter an email address to help you recover your account if you forget your password.
11. Verify Your Email (If Added):
    • If you add a recovery email, you’ll receive a verification email. Follow the instructions in the email to verify your email address.
12. Enable 2FA:
    • Once you’ve set up your password and, if applicable, verified your email, two-factor authentication will be enabled.

1. Open a Secret Chat:
   • Start or open a Secret Chat with the contact you want to verify.
2. Tap on Contact’s Name:
   • In the Secret Chat, tap on the name of the contact at the top of the screen.
3. View Contact Info:
   • This will bring up the contact info page for the person you’re chatting with.
4. Scroll Down to ‘Device Key’:
   • Scroll down until you see the section labelled ‘Device Key’. This contains the unique identifier for their device.
5. Verify Device Key:
   • Compare the device key displayed on your screen with the device key displayed on the contact’s device. This can be done either by reading the key aloud, comparing it through a video call, or scanning each other’s QR codes.
6. Match Device Keys:
   • Ensure that the device keys match exactly. This is a security measure to confirm that you’re communicating with the correct person.
7. Complete Verification:
   • Once you’ve verified the device key, you can be more confident that you’re having a secure conversation with the intended recipient.

1. Open a Secret Chat:
   • Start or open a Secret Chat with the contact you want to communicate with securely.
2. Type Your Message:
   • Compose your message like you normally would.
3. Enable Screen Security:
   • Below the text input field, you’ll see a padlock icon. Tap on it.
4. Set a Passcode:
   • You’ll be prompted to set a passcode. This passcode will be required to take screenshots during the Secret Chat.
5. Confirm Passcode:
   • Re-enter the passcode to confirm.
6. Screen Security Enabled:
   • Once you’ve set the passcode, screen security will be enabled for the current Secret Chat.
7. Disable Screen Security (Optional):
   • If you want to disable screen security for the chat, you can tap on the padlock icon again and enter the passcode to turn it off.

1. Open Telegram:
   • Launch the Telegram app on your device.
2. Access Settings:
   • Tap on the three horizontal lines in the top-left corner to open the main menu.
3. Go to Settings:
   • Scroll down and select “Settings”.
4. Privacy and Security:
   • Under the “Settings” menu, find and tap on “Privacy and Security”.
5. Passcode Lock:
   • Look for the option labelled “Passcode Lock” and tap on it.
6. Enable Passcode Lock:
   • Toggle the switch to enable Passcode Lock.
7. Set Passcode:
   • Enter a secure PIN or passcode. This will be the code you’ll use to unlock Telegram.
8. Confirm Passcode:
   • Re-enter the passcode to confirm.
9. Optional: Enable Touch ID/Face ID (if available):
   • If your device supports biometric authentication, you can choose to enable Touch ID or Face ID for added convenience in unlocking Telegram.
10. Passcode Lock Enabled:
    • Once you’ve set up the passcode, Telegram will be locked whenever you close the app or switch to a different one. You’ll need to enter the passcode to access your messages.

1. Open Telegram:
   • Launch the Telegram app on your device.
2. Access Settings:
   • Tap on the three horizontal lines in the top-left corner to open the main menu.
3. Go to Settings:
   • Scroll down and select “Settings”.
4. Privacy and Security:
   • Under the “Settings” menu, find and tap on “Privacy and Security”.
5. Privacy Settings:
   • Within the “Privacy and Security” settings, you’ll find various options to customize your privacy settings.
   • Last Seen & Online:
     • You can choose who can see your “Last Seen” status (everyone, my contacts, or nobody).
   • Profile Photo:
     • Similarly, you can set who can see your profile picture (everyone, my contacts, or nobody).
   • Forwarded Messages:
     • You can specify who can see that you’ve forwarded a message (everyone, my contacts, or nobody).
   • Add to Groups:
     • Decide who can add you to groups (everyone, my contacts, or nobody). If you choose “Nobody”, you’ll receive an invitation to join any group you’re added to.
   • Phone Number:
     • Choose who can see your phone number (everyone, my contacts, or nobody).
   • Groups and Channels:
     • Customize who can add you to groups or channels (everyone, my contacts, or nobody).
   • Voice Calls:
     • Specify who can call you (everyone, my contacts, or nobody).
   • Video Calls:
     • Similar to voice calls, you can choose who can initiate video calls with you.
   • Blocked Users:
     • Manage the list of users you’ve blocked.
   • Secret Chats:
     • You can choose to allow or disallow screenshots in Secret Chats.
6. Adjust Settings:
   • For each of the above options, tap and select your preferred setting.
7. Save Changes:
   • Once you’ve adjusted your privacy settings, make sure to save your changes.

1. Open the Chat: Go to the chat where the message you want to forward is located.
2. Select the Message: Tap and hold on the message you want to forward. This will bring up a menu of options.
3. Forward Message: Select the forward option (usually indicated by an arrow icon).
4. Choose Recipient: Select the chat or contact to whom you want to forward the message.
5. Send: Tap the send button to forward the message.

1. Open the Chat:
   • Go to the chat with the user or message that you want to report.
2. Tap on the User’s Name or Message:
   • In the chat, tap on the user’s name at the top of the specific message you want to report.
3. Access the Three-Dot Menu:
   • Look for the three-dot menu icon (usually in the top-right corner or as an option after selecting the user/message).
4. Select ‘Report’:
   • Tap on the option labeled ‘Report’.
5. Choose the Reason:
   • Telegram will provide you with options to choose why you’re reporting this user or message. Select the most appropriate reason.
6. Provide Additional Information (Optional):
   • You may have the option to provide additional context or comments regarding the report. This step is usually optional.
7. Submit the Report:
   • Once you’ve selected the reason and, if applicable, provided additional information, submit the report.

Blocking a User:

1. Open the Chat:
   • Go to the chat with the user you want to block.
2. Access the Three-Dot Menu:
   • Look for the three-dot menu icon (usually in the top-right corner).
3. Select ‘Block User’:
   • Tap on the option labeled ‘Block User’.
4. Confirm the Action:
   • You’ll be asked to confirm that you want to block this user. Confirm the action.

Unblocking a User:

1. Access Settings:
   • Tap on the three horizontal lines in the top-left corner to open the main menu.
2. Go to Settings:
   • Scroll down and select “Settings”.
3. Privacy and Security:
   • Under the “Settings” menu, find and tap on “Privacy and Security”.
4. Blocked Users:
   • You’ll see an option called “Blocked Users”. Tap on it.
5. Select User to Unblock:
   • Find the user you want to unblock in the list of blocked users and tap on their name.
6. Unblock User:
   • Confirm that you want to unblock this user.

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