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QR Code Authentication

QR code authentication is often faster and doesn’t require SMS access. Scan a QR code with your Telegram app to authenticate.

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Step-by-Step Process

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Step 1: Generate QR Code

  1. Select “QR Code” authentication method
  2. Click “Generate QR Code”
  3. QR code appears on screen
  4. QR code is valid for 30 seconds
Screenshot placeholder: Add a screenshot showing the QR code generation interface

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Step 2: Scan QR Code

  1. Open Telegram app on your phone
  2. Go to Settings → Devices → Link Desktop Device
  3. Scan the QR code displayed in Reach
  4. Confirm on your phone
The QR code scanner in Telegram is usually found in Settings → Devices or Privacy → Active Sessions.

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Step 3: Wait for Authentication

  • QR code polling starts automatically
  • System checks for authentication
  • Status updates when scanned
  • May take a few seconds
Screenshot placeholder: Add a screenshot showing the polling/scanning status

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Step 4: Two-Factor Authentication (if enabled)

If your Telegram account has 2FA enabled:
  1. Enter your 2FA password
  2. Click “Confirm 2FA Password”
  3. Authentication completes

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Troubleshooting

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QR Code Expired

If QR code expires:
  1. Click “Generate New QR Code”
  2. Scan new code immediately
  3. QR codes expire after 30 seconds
  4. Generate fresh code if needed

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Cannot Scan

If you cannot scan:
  1. Ensure QR code is clearly visible
  2. Check camera permissions
  3. Try generating new code
  4. Use phone authentication instead

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Scanning Doesn’t Work

If scanning doesn’t authenticate:
  1. Verify QR code is fresh (not expired)
  2. Check internet connection
  3. Ensure Telegram app is updated
  4. Try generating new code
  5. Use phone authentication as alternative

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2FA Required

If 2FA password is required:
  1. Enter your Telegram 2FA password
  2. This is different from account password
  3. If forgotten, reset through Telegram
  4. Cannot proceed without 2FA password

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Advantages of QR Code

Benefits:
  • Faster than phone authentication
  • No SMS required
  • Works without phone number access
  • Often more reliable
When to Use:
  • Quick authentication
  • No SMS access
  • Multiple account setup
  • Faster workflow

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Best Practices

  1. Scan Quickly: QR codes expire in 30 seconds
  2. Have 2FA Ready: Keep 2FA password accessible
  3. Good Lighting: Ensure QR code is clearly visible
  4. Stable Connection: Use stable internet connection