How to Lock a Stolen Mobile

by Diana V. Faustmann

A stolen cell phone or smart phone can cause high anxiety, even panic, because it can lead to serious unauthorized charges and identity theft. Unfortunately, cell phone insurance giant Asurion estimates that 60 million Americans lose their mobile phones each year, many to theft. As a precaution, set a passcode or PIN on your device today and note the device's IMEI number. Also download or subscribe to an anti-theft tracking program. Should your mobile phone get stolen, act quickly with your service provider and your available technology to suspend service, locate the device, block its use and prevent access to stored data.

Work with Your Phone Service Provider

Call your phone service provider.

Call your phone service provider immediately to report the loss and suspend service.

Access your account on the service provider’s website.

If live support is not immediately available, access your account on the service provider’s website to see if you can suspend service yourself online. Follow up with a phone call to your service provider in any event.

SIM card

Ask whether your carrier can block your phone from being used even with a new SIM card. Provide your phone’s International Mobile Equipment Identifier, or IMEI number, if requested.

Request a written or emailed confirmation from your carrier.

Request a written or emailed confirmation from your carrier that your service has been suspended and blocked.

File a police report.

File a police report. Provide the police case number to your service or insurance provider, if requested.

Work with Available Software


Register your phone with online services such as or, to track your phone’s usage or circulation from anywhere in the world. Regularly check your account online for any attempted usage.

Log in to your account at your phone tracking program's website.

Log in to your account at your phone tracking program's website. Follow the instructions and use the tools provided to locate your phone.


Once the phone is located, follow the program’s specific instructions to remotely block your mobile phone and wipe it clean of information. Some programs also enable you to make your phone sound an alarm.

Items you will need

About the Author

Since 1988, Diana Faustmann has been writing on technology, business and culture. Her articles have appeared in various print publications, corporate websites and authoritative online sites. Faustmann holds a Bachelor of Arts in psychology from the University of the Philippines.

More Articles

Photo Credits

  • photo_camera Jupiterimages/Polka Dot/Getty Images