TWRP device tree for Realme RMX1821 (Realme 3)

About Device

Component Type	Details
Models	RMX1825, RMX1821
CPU	Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53) Helio P70
Chipset	MT6771 (12 nm)
GPU	Mali-G72 MP3
architecture	64 bit
Memory	4/6 GB RAM
Shipped OS	ColorOS 6.0 based on Android 9.0
Storage	64/128 GB DDR4X (expandable storage up to 256GB (VFAT))
Battery	Non-removable Li-Ion 4230 mAh battery
Height	156.1mm
Width	75.6mm
Thickness	8.3mm
Weight	175g (with battery)
Display	6.22" (16cm) IPS LCD capacitive touchscreen, 16M colors, Dewdrop Full Screen
Aspect Ratio	19 : 9
Screen To Body Ratio	~81.8%
Pixel density	~270 PPI
Screen resolution	720 x 1520 pixels
Protection	Corning Gorilla Glass 3
Quick charging	Yes, 10W
Wifi	Yes, IEEE802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
Bluetooth	4.2, A2DP, LE
GPS	Yes, with A-GPS, GLONASS
USB	microUSB 2.0, USB On-The-Go
Body Build	Front glass, plastic(Polycarbonate) body
Colours	Black, Dynamic Black, Radiant Blue
Network support	Both SIM slots are compatible with 4G, support 4G VoLTE in both slots simultaneously
Card	Triple Slots / dual nano-SIM
SIM size	SIM1: Nano, SIM2: Nano
Sensors	P/L-Sensors, Accelerometer, Gyroscope, Geomagnetic Sensor, Fingerprint (rear-mounted)

Tests	Results
Performance	Basemark OS II: 2104 / Basemark OS II 2.0: 2020 Basemark X: 19157
Display	Contrast ratio: 1464:1 (nominal), 2.918 (sunlight)
Camera	Photo / Video
Loudspeaker	Voice 66dB / Noise 71dB / Ring 81dB
Audio quality	Noise -93.5dB / Crosstalk -91.6dB
Battery life	Endurance rating 108h

Note: Above test results may(not) vary.

This device tree can be used to build twrp for Realme RMX1821 (Realme 3)

export ALLOW_MISSING_DEPENDENCIES=true
source build/envsetup.sh
lunch omni_RMX1821-eng
mka recoveryimage