The Xiaomi Mi 9 SE (codenamed "grus") is a middle-ranged smartphone from Xiaomi.

It was announced in Febraury 2019. Release date was March 2019.

Device specifications

Basic	Spec Sheet
SoC	Qualcomm SDM712 Snapdragon 712
CPU	Octa-core (2x2.3 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver)
GPU	Adreno 616
Memory	6 GB RAM
Shipped Android Version	9 with MIUI 10
Storage	64/128 GB
Battery	Non-removable Li-Pol 3070 mAh battery
Display	1080 x 2340 pixels, 19.5:9 ratio, 5.97 inches, Super AMOLED (~432 ppi density)
Rear Camera	48 MP (wide) + 13 MP (ultrawide) + 8 MP (portrait), PDAF, dual-LED (dual tone) flash

Device picture

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For building LineageOS 20

Create '.repo/local_manifests/roomservice.xml' with the following content:

<?xml version="1.0" encoding="UTF-8"?>
<manifest>

  <project name="LineageOS/android_hardware_xiaomi" path="hardware/xiaomi" remote="github" revision="lineage-20" />

  <project name="kyasu/android_kernel_xiaomi_sdm710" path="kernel/xiaomi/sdm710" remote="github" revision="lineage-20" />
  <project name="kyasu/android_device_xiaomi_grus" path="device/xiaomi/grus" remote="github" revision="lineage-20" />
  <project name="kyasu/android_vendor_xiaomi_grus" path="vendor/xiaomi/grus" remote="github" revision="lineage-20" />

</manifest>