Devices / phone
Sony Xperia Z3
Also known as z3, sony-leo, sony-leo-downstream
Open firmwareImported
A free replacement firmware exists.
Get started
2 known ways to put open firmware or software on this device, easiest first. Each one links to the project's own instructions.
Before you start- Back up your data and settings (and the stock firmware, when the guide says how).
- Check the exact model, hardware revision and firmware version against the guide: a close model may not work.
- Charge the battery or use a stable power supply; do not unplug during the install.
Install LineageOS over USB (bootloader unlock)
MediumNeeds a cable or the command line
- You need
- Computer with adb and fastboot, USB cable
- Device opened
- No
- Reversible
- Partly
No longer maintained: there are no official builds, the guide has you build LineageOS from source. The bootloader must be unlocked first, which also wipes the device; some vendors make you request an unlock code or wait before unlocking. Installing wipes all data on the device: back it up first.
No install report yet. · Report how it went
Install Nura/postmarketOS over USB (bootloader unlock)
MediumNeeds a cable or the command line · Nura/postmarketOS
- You need
- Computer with pmbootstrap and fastboot, USB cable
- Device opened
- No
Uses the bootloader's fastboot mode. The bootloader must be unlocked first, which wipes the device. Installing replaces the stock system: back up your data first. This is a testing port: what works varies, check the device page.
No install report yet. · Report how it went
OpenDeviceDB links to each project's own instructions and tools; nothing is flashed from this site. Flashing is at your own risk and may void the warranty.
- ID
- sony/xperia-z3
- Category
- phone
- Vendor support
- Unknown
- sku
- D6603
- chips
- Qualcomm MSM8974AC Snapdragon 801
- Updated
- 2026-10-17
Being worked on
No live claim. If you start working on this device, claim it so nobody duplicates your work.
Interfaces
No interface documented yet.
Projects
Verification
Not verified. A "verified on hardware" badge requires a replayable test (hardware-replay) run on a real device with a stated firmware version.
Provenance
AI assistance not stated.
Status and claims as of the build date (2026-10-18). Data licensed CC BY-SA 4.0; imported data keeps its upstream license.