This same method works for most Qualcom android devices though, you should proceed with caution.
NOTE: I have only confirmed this tutorial working for the Sony Xperia Z but there is no reason it will not work for other Sony android devices.
Disclaimer:
Changing of IMEI is illegal in most countries and this publication is ONLY for tutorials purposes therefore; you are solely responsible for your actions.
Requirements for Changing Sony Android Device IMEI
1. ROOT Access: the Sony Android device must be rooted to successfully change the IMEI using the guides explained herein.2. Xposed installer: you need to have Xposed Installer installed on your Sony android device. You may download Xposed Installer here.
3. IMEI Changer: you may download the IMEI changer from Play Store here.
The IMEI Changer linked above is the specific IMEI Changer needed for this method to work because it is an Xposed module.
Guides for Changing your Sony Android IMEI
1. Install Xposed installer and launch it.2. Click on Framework, then click on install/update.
3. When it is successfully updated, reboot your device.
4. Install IMEI changer.
5- Open Xposed Installer and click on modules. From the list, select and tick IMEI changer then, click on the IMEI Changer from within the Xposed Installer to lunch IMEI changer.
7. Generate your blackberry IMEI and input it in the space provided and click Apply.
8. Reboot your device and dial *#06# to confirm that your IMEI was successfully changed.
NOTE:
1- Please be informed that Xposed Installer bricks some android devices. Although, Sony Androids are not as tender as some other androids, you should take necessary precautions while following the instructions.
2- Following this guide, you may write any IMEI other than the BlackBerry IMEI on your Sony android device.
Good luck.
If you have any questions, use the comment box below. Also, don't forget to comment if this method works for you.