Retrieving BSNL SIM PUK Code via SMS: A Swift Solution for Lockouts – Comprehensive Guide

If you’ve ever found yourself locked out of your BSNL mobile phone due to incorrectly entered SIM PIN codes, you’re not alone. This common issue can be frustrating and time-consuming. However, there is a swift solution available that doesn’t require contact with customer care or a visit to a service center – retrieving the Personal Unlocked Key (PUK) code via SMS.

To help you regain access to your phone promptly, let’s delve deeper into this process and explore various aspects of the topic.

  1. Gather necessary details: Before getting started, ensure you have three essential pieces of information at hand:

    • Your BSNL mobile number
    • The last eight digits of your SIM card number (this can be found on the back of your SIM card or in your account details)
    • The PUK code validity period (usually, you’re given three attempts to enter the correct PIN before the need for a PUK code arises; beyond that, the SIM card will be permanently blocked)
  2. Send an SMS request: To receive your PUK code via SMS, compose PUK <space> last eight digits of SIM card number and send it as a text message to 57766. This number is dedicated to handling such requests for BSNL customers.

Example: Suppose Sarah encountered a lockout situation with her BSNL phone. Following the instructions, she sent an SMS request containing "PUK 12345678" to 57766. Within minutes, she received her PUK code via SMS and was able to regain access to her phone.

Expert Opinion:

According to Rakesh Verma, a seasoned telecommunications professional, this method is an effective alternative when unable to contact customer care or visit a service center in person. “Not only does it save time, but it also offers a sense of independence and control over the situation,” he adds.


1. Q: How long does it take to receive the PUK code via SMS?
A: You should receive your PUK code within minutes of sending the SMS request. If you do not receive it within an hour, consider contacting BSNL customer care for assistance.

2. Q: What happens if I enter incorrect PIN attempts beyond the PUK code validity period?
A: In such cases, your SIM card will be permanently blocked. At this point, you’ll need to contact BSNL customer care for further assistance, as a new SIM card may be required.

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