Modifying or repairing an IMEI number is illegal in most countries unless you are the manufacturer, a licensed service center, or performing a legitimate repair using the device's original IMEI (e.g., after a mainboard replacement or software corruption). Falsifying an IMEI can lead to criminal charges.
For the Sony XZ3 on Android 9/10, there is a hidden engineering apk called . You can launch it without root. repair imei sony xz3
Before trying third-party tools, use Sony's official software to fix corrupted system files that might be causing the IMEI to appear "null." Sony Xperia Companion (PC or Mac). Process: Install and open Xperia Companion . Click Software Repair on the main menu. Modifying or repairing an IMEI number is illegal
For most users, the safest "repair" is a full software restoration using official tools. You can launch it without root
: Dial *#*#7378423#*#* and navigate to Service info > Configuration to check IMEI and software status . Physical Label : Check the SIM tray or the original box . 2. Flashing Official Firmware