A certain software build for the Orbic Maui device (Orbic/RC545L/RC545L:10/ORB545L_V1.4.2_BVZPP/230106:user/release-keys) leaks the IMEI and the ICCID to system properties that can be accessed by any local app on the device without any permissions or special privileges. Google restricted third-party apps from directly obtaining non-resettable device identifiers in Android 10 and higher, but in this instance they are leaked by a high-privilege process and can be obtained indirectly. This malicious app reads from the "persist.sys.verizon_test_plan_imei" system property to indirectly obtain the IMEI and reads the "persist.sys.verizon_test_plan_iccid" system property to obtain the ICCID.

MITRE https://media.defcon.org/DEF%20CON%2031/DEF%20CON%2031%20presentations/Ryan%20Johnson%20Mohamed%20Elsabagh%20Angelos%20Stavrou%20-%20Still%20Vulnerable%20Out%20of%20the%20Box%20Revisiting%20the%20Security%20of%20Prepaid%20Android%20Carrier%20Devices.pdf [No types assigned]