Xiaomi RedMi4x (xiaomi-santoni)

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Xiaomi Redmi 4x
xiaomi-santoni running pmos
xiaomi-santoni running pmos
Manufacturer Xiaomi
Name Redmi 4x
Codename xiaomi-santoni
Released 2017
Original software Android
Chipset msm8940 Snapdragon 435
CPU Octa-core 1.4 GHz Cortex-A53
GPU Adreno 505
Display 720x1280
Storage 16 GB / 32 GB / 64GB
Memory 2 GB / 3 GB / 4 GB


  • pinoaffe


  • pinoaffe

What works

  • Boots
  • Screen
  • Touch
  • Flashing
  • Battery
  • USB host mode

What does not work

  • USB Networking
    • In /sys/devices/soc/78db000.usb/msm_hsusb/ there are two files (is_peripheral and is_otg) that might have to do with switching device-type, but they're both 0 and writing 1 to either results in I/O errors
  • USB device mode
  • Wireless LAN
  • Audio
  • Mainline
  • Camera
  • GPS
  • Mobile Data
  • SMS
  • Calls
  • Accelerometers
  • Bluetooth
  • Accelerated 3D graphics
  • Backlight stays on when the phone goes into "sleep" because of a lack of user interaction

How to enter flash mode

Turn the phone off and press and hold both the power and volume button at the same time. Keep holding those buttons untill a picture of the Xiaomi bunny appears.


Installation over fastboot works, android recovery zip installation is untested.

See also