Product
Oppo K12 Plus
Oppo K12 Plus
Xiaomi Mi Max 3
Xiaomi Mi Max 3
Battery
Charging 80W wired, PD, UFCS, 50% in 20 min 10W reverse wired 18W wired, QC3
Type 6400 mAh Li-Ion 5500 mAh, non-removable
Body
Build - Glass front, aluminum back, aluminum frame
Dimensions 162.5 x 75.3 x 8.4 mm (6.40 x 2.96 x 0.33 in) 176.2 x 87.4 x 8 mm (6.94 x 3.44 x 0.31 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 192 g (6.77 oz) 221 g (7.80 oz)
  IP54 dust protected and water resistant (water splashes) -
Comms
Bluetooth 5.4, A2DP, LE, aptX HD, LHDC 5.0, A2DP, LE
Infrared port Yes Yes
NFC Yes No
Positioning GPS, GALILEO, GLONASS, BDS, QZSS GPS, GLONASS, BDS
Radio No FM radio
USB USB Type-C 2.0, OTG USB Type-C
WLAN Wi-Fi 802.11 a/b/g/n/ac/6, dual-band Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA
Display
Protection - To be confirmed
Resolution 1080 x 2412 pixels, 20:9 ratio (~394 ppi density) 1080 x 2160 pixels, 18:9 ratio (~350 ppi density)
Size 6.7 inches, 108.0 cm2 (~88.3% screen-to-body ratio) 6.9 inches, 122.9 cm2 (~79.8% screen-to-body ratio)
Type AMOLED, 1B colors, 120Hz, 500 nits (typ), 900 nits (HBM), 1100 nits (peak) IPS LCD
  HDR image support -
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Launch
Announced 2024, October 12 2018, July. Released 2018, July
Status Available. Released 2024, October 15 Discontinued
Main Camera
Dual 50 MP, f/1.8, 26mm (wide), 1/1.95", 0.8µm, PDAF, OIS 8 MP, f/2.2, 16mm, 112˚ (ultrawide), 1/4.0", 1.12µm 12 MP, f/1.9, 1/2.55", 1.4µm, dual pixel PDAF 5 MP, f/2.2, (depth)
Features Dual-LED flash, HDR, panorama Dual-LED flash, HDR, panorama
Video 4K@30fps, 1080p@30/60/120fps, gyro-EIS, OIS 4K@30fps, 720p/1080p@30fps (gyro-EIS), 720p@120fps
Memory
Card slot microSDXC (uses shared SIM slot) microSDXC (uses shared SIM slot)
Internal 256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM 64GB 4GB RAM, 128GB 6GB RAM
  UFS 3.1 eMMC 5.1
Misc
Colors Black, White Black, Champagne Gold, Blue
Models PKS110 M1804E4A
SAR - 1.58 W/kg (head)     1.42 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 3, 4, 5, 8, 28, 34, 38, 39, 40, 41 1, 3, 4, 5, 7, 8, 20, 34, 38, 39, 40, 41
5G bands 1, 5, 8, 28, 41, 77, 78 SA/NSA -
Speed HSPA, LTE, 5G HSPA, LTE
Technology GSM / CDMA / HSPA / LTE / 5G GSM / CDMA / HSPA / EVDO / LTE
  CDMA 800 CDMA2000 1xEV-DO
Our Tests
Audio quality - Noise -93.7dB / Crosstalk -94.0dB
Battery (old) - Endurance rating 115h
Camera - Photo / Video
Display - Contrast ratio: 1462 (nominal), 3.061 (sunlight)
Loudspeaker - Voice 68dB / Noise 71dB / Ring 83dB
Performance - AnTuTu: 119229 (v7) GeekBench: 4907 (v4.4) GFXBench: 6fps (ES 3.1 onscreen)
Platform
Chipset Qualcomm SM7550-AB Snapdragon 7 Gen 3 (4 nm) Qualcomm SDM636 Snapdragon 636 (14 nm)
CPU Octa-core (1x2.63 GHz Cortex-A715 & 4x2.4 GHz Cortex-A715 & 3x1.8 GHz Cortex-A510) Octa-core (4x1.8 GHz Kryo 260 Gold & 4x1.6 GHz Kryo 260 Silver)
GPU Adreno 720 Adreno 509
OS Android 14, ColorOS 14.0 Android 8.1 (Oreo), upgradable to Android 10, MIUI 12
Selfie camera
Features Panorama -
Single 16 MP, f/2.4, 26mm (wide), 1/3.0", 1.0µm 8 MP, f/2.0, 1/4.0", 1.12µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack No Yes
Loudspeaker Yes, with stereo speakers Yes, with stereo speakers