Xiaomi Redmi 4A (xiaomi-rolex)
| Manufacturer | Xiaomi |
|---|---|
| Name | Redmi 4A |
| Codename | xiaomi-rolex |
| Released | 2016 |
| Type | handset |
| Hardware | |
| Chipset | Qualcomm Snapdragon 425 (MSM8917) |
| CPU | Quad-core 1.4 GHz Cortex-A53 |
| GPU | Adreno 308 |
| Display | 720 x 1280 pixels, 16:9 ratio (~296 ppi density) IPS LCD capacitive touchscreen, 16M colors |
| Storage | 16 GB |
| Memory | 2 GB |
| Architecture | aarch64 |
| Software | |
| Original software | Android (MIUI) |
| Original version | 6.0.1 (MIUI 10) |
| postmarketOS | |
| Category | testing |
| Pre-built images | no |
| postmarketOS kernel | 3.18.140 |
| Flashing |
Works |
|---|---|
| USB Networking |
Works |
| Internal storage | |
| SD card | |
| Battery |
Works |
| Screen |
Works |
| Touchscreen |
Works |
| Multimedia | |
| 3D Acceleration | |
| Audio | |
| Camera | |
| Camera Flash | |
| Connectivity | |
| WiFi |
Works |
| Bluetooth | |
| GPS | |
| NFC | |
| Modem | |
| Calls | |
| SMS | |
| Mobile data | |
| Miscellaneous | |
| FDE |
Partial |
| USB OTG |
Works |
| HDMI/DP | |
| Sensors | |
| Accelerometer | |
| Magnetometer | |
| Ambient Light | |
| Proximity | |
| Hall Effect | |
| Haptics | |
| Barometer | |
Contributors
- Nrdnandan
Maintainer(s)
- Nrdnandan
Users owning this device
- Dumpster (Notes: Soon to be pmOS test subject (needs unlock first))
- Maciej (Notes: OK, not used currently)
- Nrdnandan (Notes: Broken Touchscreen,Damaged Battery)
- RoDen (Notes: Plasma Desktop)
- Tfuxu (Notes: Damaged jack connector)
- Vincele (Notes: MIUI, not mine, locked)
- Zeroxonef (Notes: Backup phone 2, simless)
How to enter into bootloader (fastboot)
- Shutdown the phone completely.
- Press Volume Down and Power button simultaneously to enter fastboot mode.
How to enter into recovery mode
- Shutdown the phone completely
- Press Volume Up and Power button simultaneously to enter the recovery (MI or Custom).
Forked kernel
- The forked kernel used is thanks to - https://github.com/Nick89786/android_kernel_xiaomi_msm8917
Bootloader original status
- The bootloader in new Xiaomi devices are locked. To unlock it, you need to go to https://en.miui.com/unlock/download_en.html and follow the instructions as given.
Installation
The following steps boots postmarketOS.
- pmbootstrap flasher flash_rootfs
- pmbootstrap flasher flash_kernel
- pmbootstrap flasher boot
See Also
- GSMArena page
- pmaports!1158 Initial merge request
- pmaports!1911 2nd attempt merge request