In the EUI, when configuring an endpoint you have the possibility to activate an IMEI Lock. The International Mobile Equipment Identity (IMEI) is a unique number used to identify devices connecting to a GSM network. The IMEI lock option enables EMnify users to lock the use of a SIM card to a specific device based on its IMEI.
To use this IMEI lock, you do not need to know the IMEI of your device.
Effects of an IMEI lock
The EUI will detect the IMEISV (software version of the IMEI) after the first PDP context is established i.e. once the device has Internet connectivity. The user will then have the possibility to lock the data usage of the SIM card to this specific device. If the SIM is used on a different one, the following alert will be shown in the EUI:
“PDP Context Request rejected, because IMEI lock active, but IMEIs do not match, EP IMEI=3562580635695401, IMEI provided from network = 8628170310374321”
Current limitations of an IMEI lock
As the IMEI of a device is sent only when a PDP context is established, when an IMEI lock is activated, the non-data related features of the SIM will still work on any other device. The device will still be able to attach to the network, send & receive SMS.