- Verdict:
⚠️ Proceed with caution!
Sony has an open policy for software developers:
- They are releasing AOSP sources under Sony Open Devices Program.
- Jolla provides first-class support for installing Sailfish OS on select Xperias.
Since Sony likes to ruin a perfect thing:
- Sony requires you to request an unlock code from their Unlock Service. They can pull the plug anytime. You have to send your IMEI and agree to possible warranty voiding (many have had their phones repaired/replaced under warranty even after unlocking, just simply flash stock and lock before doing warranty).
Some carrier locked and US devices can never be unlocked. On Sony devices (but not all?) you can check if the bootloader is unlockable using the service menu.
- Dial
*#*#7378423#*#*in the dialer. - Tap "Service Info", then "Configuration", then "Rooting Status".
- Under Rooting Status look for "Bootloader unlock allowed"
- If "Yes", then the device is unlockable.
Sony supports Custom AVB Since 2020.