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How to Handle One-Time Passwords (OTPs) and Account Registration/Login in Telegram

2025-06-25

How to Handle One-Time Passwords (OTPs) and Account Registration/Login in Telegram

When registering or logging into your Telegram account, managing the One-Time Password (OTP) is crucial. To ensure a smooth registration or login process, here are some key steps and important points to note.

Conclusion

In Telegram, the One-Time Password (OTP) is typically sent first to your previously logged-in device. If you do not receive the OTP promptly, it is advisable to use the SMS sending option. For enhanced account security, it is highly recommended to enable Two-Step Verification.

OTP Handling

  • OTP Delivery Method: When you try to log in to Telegram, the OTP will primarily be sent to your previously logged-in Telegram application. Please check for messages within the Telegram app first to see if you have received an OTP from Telegram.
  • SMS Sending Option: If you do not receive the OTP within a few minutes, you can select "Send code via SMS".

Network Restrictions

In certain restricted regions (e.g., China), you might face issues with delayed OTP delivery. This occurs because Telegram's SMS servers are located overseas, which can lead to SMS messages not being delivered promptly.

Telegram Account Registration Logic

  1. Official Client Registration: When registering for the first time, you must use the official Telegram mobile client to receive the OTP.
  2. Desktop Client Restriction: If you attempt to register using a desktop client, the system will prompt you to use the mobile client for registration.
  3. Third-Party Client Issues: When using third-party clients, even if it prompts to send an OTP, you might not receive the SMS.

Telegram Account Login Logic

  1. OTP Delivery: For registered accounts, when logging in again, the OTP will be sent directly to a logged-in device, rather than via SMS to your phone.
  2. Two-Step Verification Not Enabled: Log in using "Mobile number + OTP".
  3. Two-Step Verification Enabled: You will need to enter "Mobile number + OTP + Two-Step Verification password" to log in.

Security Recommendations

To safeguard the security and privacy of your Telegram account, it is highly recommended that you enable Telegram's Two-Step Verification feature. This will provide an additional layer of security for your account, preventing unauthorised access.