A small white pull-out label located next to the SIM/microSD card slot.

Before you can repair anything, you must know your exact model (e.g., SO-01L, SOV39, or H9436) and your original IMEI, which is often found on: The original box or purchase receipt.

Most of these methods will erase all user data . Perform a full backup before starting.

Ultimate Guide to Sony Xperia XZ3 IMEI Repair A damaged or missing IMEI (International Mobile Equipment Identity) on your Sony Xperia XZ3 can be a major headache, often leading to "No Service" errors or preventing your device from registering on any cellular network. This typically happens after a failed firmware flash, an interrupted system update, or certain hardware repairs.

Follow the on-screen prompts to download and reinstall the official firmware.

The device software (if still accessible) by dialing *#06# or going to . 2. Software Repair via Xperia Companion

Before turning to advanced third-party tools, try the official route. Sony’s own software can often fix "broken" system files that cause IMEI-related signal issues. Download and install the Xperia Companion on your PC. Open the application and select . Power off your XZ3.

While holding the button, connect the phone to your PC via USB-C to enter Fastboot Mode .

Chimera Tool is a market-leading professional software that supports thousands of models, including Sony devices. Firmware Change/Update on SONY Xperia XZ3

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