Systemless interception. The module mimics the IMEI request from the OS to the modem. The modem still sees the original hardware IMEI, but the Android framework and carrier check apps see the spoofed IMEI.

To check if it worked (without looking at *#06# which often shows the real hardware IMEI):

Magisk provides "systemless root," meaning it lets you modify your phone's behavior without actually changing the core system files. It is the foundation , but you need additional modules to handle the IMEI. 2. Spoofing vs. Changing