Information om | Engelska ordet IMEI

Devices without a SIM card slot or eSIM capability usually do not have an IMEI code, except for certain early Sprint LTE devices such as the Samsung Galaxy Nexus and S III which emulated a SIM-free CDMA activation experience and lacked roaming capabilities in 3GPP-only countries.
Individual GSM, WCDMA, IDEN and some satellite phone devices are uniquely identified by an International Mobile Equipment Identity (IMEI) number.
ESNs are currently mainly used with CDMA phones (and were previously used by AMPS and TDMA phones), compared to International Mobile Equipment Identity (IMEI) numbers used by all GSM phones.
Each MNO must have at least one EIR, to which IMEI check requests (CheckIMEI) are sent when registering a device on the network.
In July 2020, the two separate reports by Synacktiv and GRIMM suggested that the Android version of the DJI GO 4 had potential security vulnerabilities that allowed the collection of smartphone IMSI and IMEI numbers, as well as bypassing the Google Play Store.
Specifically, mobile usage patterns such as swapping SIM cards within phones that have the same ESN, MEID or IMEI number are deemed indicative of covert activities.
Swappa requires all cellular-connected devices to be fully functional, ready for activation, and have a clean ESN / IMEI / MEID.

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