Fairphone Fairphone 4
FP4Model numbers: FP4
Specifications
- Released
- 2021
- SoC
- Qualcomm SM7225 Snapdragon 750G
- CPU
- 8 cores (arm64) — Kryo 570, 2x 2.2 GHz + 6x 1.8 GHz
- GPU
- Qualcomm Adreno 619
- RAM
- 6 GB LPDDR4X / 8 GB LPDDR4X
- Storage
- 128 GB UFS 2.1 / 256 GB UFS 2.1
- Display
- 6.3" 2340x1080 IPS LCD
- Battery
- 3905 mAh Li-Ion (removable)
Custom ROMs
The following custom ROM builds are available for FP4:
| ROM | Status | Android | Link |
|---|---|---|---|
| LineageOS | Official | 16 | Download page |
| /e/OS | Official | 14 | Download page |
| Ubuntu TouchLinux-based ROM (Ubuntu). Promoted community device; 24.04 - noble channel; 97.3% port progress. | Official | Download page | |
| iodéOSiodéOS 7 (LineageOS 23 / Android 16). Community thread: https://xdaforums.com/t/rom-fp4-a14-iodeos-lineageos-21-microg-adblocker-28-05-2024.4397481/ | Official | 16 | Download page |
| CalyxOSExtended support; security updates until Dec 2026. | Official | 16 | Download page |
| AXP.OSStable, hardened build; XDA thread: https://xdaforums.com/t/rom-a13-official-hardened-fp4-axp-os-20-0.4741001/ | Official | 13 | Download page |
| DivestOSFinal DivestOS build line was 20.0; project discontinued December 2024. | Official | 13 | Download page |
Sources
Every fact on this page was verified against these references on 2026-08-26:
- https://wiki.lineageos.org/devices/FP4/
- https://doc.e.foundation/devices/FP4
- https://devices.ubuntu-touch.io/device/fp4
- https://iode.tech/iodeos-official-supported-devices/
- https://calyxos.org/install/devices/FP4/
- https://axpos.org/devices/fairphone/fp4/
- https://web.archive.org/web/20241231111644/https://divestos.org/pages/devices
- https://xdaforums.com/t/fairphone-4-orange-fox-recovery.4773937/