Xiaomi Mi 4c (xiaomi-libra)
Appearance
	
	
| This device runs a Downstream kernel. Some UIs will not work, and most features (3D acceleration, audio, etc.) may be broken. | 
| 
 Mi 4c running weston  | |
| Manufacturer | Xiaomi | 
|---|---|
| Name | Mi 4c | 
| Codename | xiaomi-libra | 
| Released | 2015 | 
| Type | handset | 
| Hardware | |
| Chipset | Qualcomm Snapdragon 808 (MSM8992) | 
| CPU | 
4x1.4 GHz Cortex-A53  2x1.8 GHz Cortex-A57  | 
| GPU | Adreno 418 | 
| Display | 1080x1920 IPS | 
| Storage | 16/32 GB | 
| Memory | 2/3 GB | 
| Architecture | aarch64 | 
| Software | |
Original software The software and version the device was shipped with.  | 
    Android (MIUI) 5.1.1 | 
Extended version The most recent supported version from the manufacturer.  | 
    Android (MIUI) | 
| postmarketOS | |
| Category | downstream | 
Mainline Instead of a Linux kernel fork, it is possible to run (Close to) Mainline.  | 
    no | 
pmOS kernel The kernel version that runs on the device's port.  | 
    3.10.107 | 
Unixbench score Unixbench Whetstone/Dhrystone score. See Unixbench.  | 
    1926.2 | 
| Device package | 
 | 
| Kernel package | 
 | 
Flashing Whether it is possible to flash the device with  pmbootstrap flasher. | 
    
 Works 
 | 
|---|---|
USB Networking After connecting the device with USB to your PC, you can connect to it via telnet (initramfs) or SSH (booted system).  | 
    
 Works 
 | 
Battery Whether charging and battery level reporting work.  | 
    
 Works 
 | 
Screen Whether the display works; ideally with sleep mode and brightness control.  | 
    
 Works 
 | 
Touchscreen  | 
    
 Works 
 | 
| Multimedia | |
3D Acceleration  | 
    
 Untested 
 | 
Audio Audio playback, microphone, headset and buttons.  | 
    
 Untested 
 | 
Camera  | 
    
 Untested 
 | 
| Connectivity | |
WiFi  | 
    
 Works 
 | 
Bluetooth  | 
    
 Untested 
 | 
GPS  | 
    
 Untested 
 | 
| Modem | |
Calls  | 
    
 Untested 
 | 
SMS  | 
    
 Untested 
 | 
Mobile data  | 
    
 Untested 
 | 
| Miscellaneous | |
FDE Full disk encryption and unlocking with unl0kr.  | 
    
 Untested 
 | 
USB OTG USB On-The-Go or USB-C Role switching.  | 
    
 Untested 
 | 
| Sensors | |
Accelerometer Handles automatic screen rotation in many interfaces.  | 
    
 Untested 
 | 

Contributors
- aostanin
 
Maintainer(s)
Users owning this device
- Hastalavista (Notes: PMOS edge w/ downstream kernel, broken touchscreen, WiFi not working, wonky PMIC)
 - Netman (Notes: No battery)
 - Russanandres (Notes: MIUI v8)
 - TukangM (Notes: 3/32, second phone, touchscreen cracked, dead battery, still working if i had to fix it)
 
Issues
- (Gnome) Password request dialog covers OnBoard input
 

How to enter flash mode
Recovery mode
- Turn the device off (or restart also works)
 - Hold and button
 - Once you feel vibration and phone turns on, release button
 - Keep holding until you get to recovery.
 
Flashing (Download, Fastboot) mode
- Same as recovery, but this time hold the and keys.
 
Installation
- Install pmbootstrap first on your PC
 - zap & reinit pmbootstrap (
pmbootstrap -y zap ; pmbootstrap init), choosexiaomi-ferrarias a device - proceed with installation as usual: reboot device to fastboot mode, then:
 
pmbootstrap install pmbootstrap flasher flash_kernel pmbootstrap flasher flash_rootfs
Mainline kernel
There is a close-to-mainline kernel fork featuring USB, screen via simplefb and basic core bringup. Find it here.
See also
- pmaports!1454 Initial merge request