For modern iPhones, the IMEI is deeply integrated into the secure hardware architecture. Unlike some older Android devices where certain "Engineer Mode" commands might allow modifications, Apple does not provide tools or APIs for this purpose.
While you cannot change the IMEI itself, you may be looking for solutions to related issues: For modern iPhones, the IMEI is deeply integrated
How to Change IMEI Number on iPhone: Everything you need to know For modern iPhones
: The IMEI is encrypted and tied to other internal components like the CPU and Secure Enclave. For modern iPhones, the IMEI is deeply integrated
: Activation and network services are controlled by Apple’s activation database. Even if a local hardware change were attempted, the device would likely fail to activate once it connected to Apple's servers.