How to Track a Stolen Phone Using IMEI, ICCID and Anti-Theft Apps

Most smartphone users have experienced losing a phone at some point. Whether it’s a newly purchased device or a long‑time companion, having it stolen can be devastating, not only because of the loss of personal data but also because contacts and memories may be gone forever.

The author describes how his iPhone 5s was stolen at Tianjin railway station. After the phone disappeared, the first instinct was to call it, but the line indicated the device was powered off, confirming the theft.

He immediately borrowed another phone to call his carrier (10086) and request a service suspension to prevent misuse of the SIM. He then reported the theft to the local police.

The police asked for the phone’s serial number (IMEI). The author learned that the IMEI (International Mobile Equipment Identity) is a unique identifier embedded in the device’s hardware and cannot be altered, making it useful for tracking stolen phones.

In addition to the IMEI, the ICCID (Integrated Circuit Card Identifier) of the SIM card can be used. The ICCID is stored on the SIM and can be queried by carriers to identify the SIM’s owner and phone number.

Method One: Using External Services to Locate the Phone

The police explained that while they can track a device via IMEI, they only activate such equipment for serious cases. The author turned to a third‑party service on Taobao that offers IMEI‑based tracking. The service promised to monitor the phone and, once the thief flashes the device and inserts a new SIM, retrieve the new SIM’s ICCID. With that ICCID, the author could obtain the new SIM’s details from the carrier and provide the information to the police.

After submitting his IMEI, the service reported that the phone remained offline, meaning the thief had not yet powered it on. Several weeks later, the service notified the author that a new SIM (a Hong Kong number) had been used, suggesting the phone had been taken to Hong Kong. The service offered to continue monitoring for any further movement.

Method Two: Mobile Anti‑Theft Software – The Thief’s Nemesis

The article also lists several anti‑theft apps. 360 Mobile Guard, for example, lets the owner set a “safe number.” When the phone is stolen and the SIM is changed, the app automatically sends an SMS to the safe number. Sending commands such as “ingbao#password” triggers a loud alarm; “Suoding#password” locks the phone and, after two failed unlock attempts, captures a photo with the front camera and sends it via MMS to a preset address. The app can also emit a loud alarm if earphones are disconnected.

Similar functionality is offered by NetQin Mobile Guard and Kingsoft Mobile Guard.

Another hardware option mentioned is a Bluetooth wristband that vibrates strongly when the phone moves more than about 10 meters away from the wearer, acting as a personal anti‑theft device.

Even though the author ultimately could not recover the stolen iPhone, the experience provided a practical lesson in mobile security and highlighted tools that can help prevent or mitigate future thefts.