Product
Vivo Z3
Vivo Z3
Xiaomi Mi Max 3
Xiaomi Mi Max 3
Battery
Charging - 18W wired, QC3
Type 3315 mAh, non-removable Li-Ion 5500 mAh, non-removable
Body
Build - Glass front, aluminum back, aluminum frame
Dimensions 156 x 75.6 x 8.1 mm (6.14 x 2.98 x 0.32 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 164 g (5.78 oz) 221 g (7.80 oz)
Comms
Bluetooth 4.2, A2DP, EDR, LE, aptX 5.0, A2DP, LE
Infrared port - Yes
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS, BDS
Radio FM radio FM radio
USB microUSB 2.0, OTG USB Type-C
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA
Display
Protection - To be confirmed
Resolution 1080 x 2280 pixels, 19:9 ratio (~400 ppi density) 1080 x 2160 pixels, 18:9 ratio (~350 ppi density)
Size 6.3 inches, 99.1 cm2 (~84.0% screen-to-body ratio) 6.9 inches, 122.9 cm2 (~79.8% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Infrared Face ID, fingerprint (rear-mounted), accelerometer, proximity, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Launch
Announced 2018, October. Released 2018, October 2018, July. Released 2018, July
Status Discontinued Discontinued
Main Camera
Dual 16 MP, f/2.0, PDAF 2 MP, f/2.4, (depth) 12 MP, f/1.9, 1/2.55", 1.4µm, dual pixel PDAF 5 MP, f/2.2, (depth)
Features LED flash, HDR, panorama Dual-LED flash, HDR, panorama
Video 1080p@30fps 4K@30fps, 720p/1080p@30fps (gyro-EIS), 720p@120fps
Memory
Card slot microSDXC (dedicated slot) microSDXC (uses shared SIM slot)
Internal 64GB 4GB RAM, 64GB 6GB RAM, 128GB 6GB RAM 64GB 4GB RAM, 128GB 6GB RAM
  - eMMC 5.1
Misc
Colors Starry Night, Aurora Blue, Dream Powder Black, Champagne Gold, Blue
Models V1813BT, V1813BA 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 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 3, 5, 8, 34, 38, 39, 40, 41 1, 3, 4, 5, 7, 8, 20, 34, 38, 39, 40, 41
Speed HSPA, LTE HSPA, LTE
Technology GSM / CDMA / HSPA / LTE GSM / CDMA / HSPA / EVDO / LTE
  CDMA 800 / 1900 & TD-SCDMA 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 SDM670 Snapdragon 670 (10 nm)Qualcomm SDM710 Snapdragon 710 (10 nm) Qualcomm SDM636 Snapdragon 636 (14 nm)
CPU Octa-core (2x2.0 GHz 360 Gold & 6x1.7 GHz Kryo 360 Silver)Octa-core (2x2.2 GHz 360 Gold & 6x2.2 GHz Kryo 360 Silver) Octa-core (4x1.8 GHz Kryo 260 Gold & 4x1.6 GHz Kryo 260 Silver)
GPU Adreno 615Adreno 616 Adreno 509
OS Android 8.1 (Oreo) Android 8.1 (Oreo), upgradable to Android 10, MIUI 12
Selfie camera
Features HDR -
Single 12 MP, f/2.0, (wide), 1/2.8", 1.28µm 8 MP, f/2.0, 1/4.0", 1.12µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes, with stereo speakers