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How to change Android lock screen PIN with SMS using SureLock

If your device is locked down with SureLock with capability to receive SMS and has internet connectivity, with the inbuilt SMS Command feature, you can set a new Lock Pin or change an existing one through SMS. This could be done even if you don’t know the old pin of the device.

SureLock’s SMS Command feature allows an authorized user to communicate with the device and perform activities like changing or setting a Lock Pin. The implementation of OTP sent over configured email for authentication of SMS commands makes the whole process safe and secure.


The purpose of this knowledge article is to provide a guide on how to change Android lock screen PIN with SMS using SureLock.




1. Go to SureLock Settings (by tapping five times and entering admin password).

2. Tap on Phone Settings and enable the Enable SMS Command feature.

3. Export SureLock Settings using Import/Export Settings options.

4. Open SureLock Settings file and add following tags below enablesmscommand tag:

  • <smtpemailusername>some_email@gmail.com</smtpemailusername> (email account from which the email is sent)
  • <smtpemailpassword>password</smtpemailpassword> (the password for the email account)
  • <smtpemailhost>smtp.gmail.com</smtpemailhost> (host mail/constant value )
  • <smsotpemailtoaddresses>reciever@42gears.com</smsotpemailtoaddresses>

Note: smsotpemailtoaddresses can have multiple email addresses separated by comma, for eg. abc@abc.com,atoz@abc.com

5. Once done save the settings file and import it on the device.

6. Use a phone to create OTP using the following SMS command. This OTP will be sent to the address configured in smsotpemailtoaddresses.


Note:  1232 is an OTP id which can be used to distinguish OTP email for that device.

7. Once you receive the email with OTP, use it in the SMS in the below mentioned format to change device password to 0000.


Note: You can replace 0000 with any alphanumeric to set as device pin/password.

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Updated on March 2023