Product
Xiaomi Mi 8
Xiaomi Mi 8
Xiaomi Mi Max 3
Xiaomi Mi Max 3
Battery
Charging 18W wired, QC4 18W wired, QC3
Type Li-Po 3400 mAh, non-removable Li-Ion 5500 mAh, non-removable
Body
Build Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame (7000 series) Glass front, aluminum back, aluminum frame
Dimensions 154.9 x 74.8 x 7.6 mm (6.10 x 2.94 x 0.30 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 175 g (6.17 oz) 221 g (7.80 oz)
Comms
Bluetooth 5.0, A2DP, LE, aptX HD 5.0, A2DP, LE
Infrared port - Yes
NFC Yes No
Positioning GPS (L1+L5), GLONASS (L1), BDS (B1), GALILEO (E1+E5a), QZSS (L1+L5) GPS, GLONASS, BDS
Radio No FM radio
USB USB Type-C USB Type-C
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA
Display
Protection Corning Gorilla Glass 5 To be confirmed
Resolution 1080 x 2248 pixels (~402 ppi density) 1080 x 2160 pixels, 18:9 ratio (~350 ppi density)
Size 6.21 inches, 97.1 cm2 (~83.8% screen-to-body ratio) 6.9 inches, 122.9 cm2 (~79.8% screen-to-body ratio)
Type Super AMOLED, HDR10 IPS LCD
Features
Sensors Infrared Face ID, fingerprint (rear-mounted), accelerometer, gyro, proximity, barometer, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Launch
Announced 2018, May. Released 2018, June 2018, July. Released 2018, July
Status Discontinued Discontinued
Main Camera
Dual 12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF, 4-axis OIS 12 MP, f/2.4, 56mm (telephoto), 1/3.4", 1.0µm, AF, 2x optical zoom 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@30/60fps, 1080p@30/120/240fps, 720p@960fps 4K@30fps, 720p/1080p@30fps (gyro-EIS), 720p@120fps
Memory
Card slot No microSDXC (uses shared SIM slot)
Internal 64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM 64GB 4GB RAM, 128GB 6GB RAM
  UFS 2.1 eMMC 5.1
Misc
Colors Black, Blue, White, Gold Black, Champagne Gold, Blue
Models M1803E1A M1804E4A
SAR 0.70 W/kg (head)     1.66 W/kg (body)     1.58 W/kg (head)     1.42 W/kg (body)    
SAR EU 1.01 W/kg (head)     1.32 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, 2, 3, 4, 5, 7, 8, 12, 17, 20, 34, 38, 39, 40, 41 1, 3, 4, 5, 7, 8, 20, 34, 38, 39, 40, 41
Speed HSPA 42.2/5.76 Mbps, LTE (4CA) Cat16 1024/150 Mbps HSPA, LTE
Technology GSM / CDMA / HSPA / LTE GSM / CDMA / HSPA / EVDO / LTE
  CDMA 800 & TD-SCDMA CDMA2000 1xEV-DO
Our Tests
Audio quality Noise -93.9dB / Crosstalk -93.7dB Noise -93.7dB / Crosstalk -94.0dB
Battery (old) Endurance rating 86h Endurance rating 115h
Camera Photo / Video Photo / Video
Display Contrast ratio: Infinite (nominal), 4.086 (sunlight) Contrast ratio: 1462 (nominal), 3.061 (sunlight)
Loudspeaker -29.1 LUFS (Average) Voice 68dB / Noise 71dB / Ring 83dB
Performance AnTuTu: 217298 (v7), 341687 (v8) GeekBench: 8494 (v4.4), 2002 (v5.1) GFXBench: 33fps (ES 3.1 onscreen) AnTuTu: 119229 (v7) GeekBench: 4907 (v4.4) GFXBench: 6fps (ES 3.1 onscreen)
Platform
Chipset Qualcomm SDM845 Snapdragon 845 (10 nm) Qualcomm SDM636 Snapdragon 636 (14 nm)
CPU Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.8 GHz Kryo 385 Silver) Octa-core (4x1.8 GHz Kryo 260 Gold & 4x1.6 GHz Kryo 260 Silver)
GPU Adreno 630 Adreno 509
OS Android 8.1 (Oreo), upgradable to Android 10, MIUI 12 Android 8.1 (Oreo), upgradable to Android 10, MIUI 12
Selfie camera
Single 20 MP, f/2.0, (wide), 1/3", 0.9µm 8 MP, f/2.0, 1/4.0", 1.12µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack No Yes
Loudspeaker Yes Yes, with stereo speakers