Product
Vivo Z3
Vivo Z3
Xiaomi Mi Mix 2S
Xiaomi Mi Mix 2S
Battery
Charging - 18W wired, QC3 7.5W wireless (Qi)
Type 3315 mAh, non-removable Li-Ion 3400 mAh, non-removable
Body
Build - Glass front (Gorilla Glass 4), ceramic back, aluminum frame
Dimensions 156 x 75.6 x 8.1 mm (6.14 x 2.98 x 0.32 in) 150.9 x 74.9 x 8.1 mm (5.94 x 2.95 x 0.32 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 164 g (5.78 oz) 191 g (6.74 oz)
Comms
Bluetooth 4.2, A2DP, EDR, LE, aptX 5.0, A2DP, LE
NFC No Yes
Positioning GPS, GLONASS, BDS GPS, GLONASS, BDS
Radio FM radio No
USB microUSB 2.0, OTG USB Type-C 2.0
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
Display
Protection - Corning Gorilla Glass 4
Resolution 1080 x 2280 pixels, 19:9 ratio (~400 ppi density) 1080 x 2160 pixels, 18:9 ratio (~403 ppi density)
Size 6.3 inches, 99.1 cm2 (~84.0% screen-to-body ratio) 5.99 inches, 92.6 cm2 (~81.9% 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, compass
  - Virtual proximity sensing
Launch
Announced 2018, October. Released 2018, October 2018, March. Released 2018, April
Status Discontinued Discontinued
Main Camera
Dual 16 MP, f/2.0, PDAF 2 MP, f/2.4, (depth) 12 MP, f/1.8, (wide), 1/2.55", 1.4µm, dual pixel PDAF, 4-axis OIS 12 MP, f/2.4, (telephoto), 1/3.4", 1.0µm, AF, 2x optical zoom
Features LED flash, HDR, panorama Dual-LED dual-tone flash, HDR, panorama
Video 1080p@30fps 4K@30fps, 1080p@30/120fps, 720p@240fps
Memory
Card slot microSDXC (dedicated slot) No
Internal 64GB 4GB RAM, 64GB 6GB RAM, 128GB 6GB RAM 64GB 6GB RAM, 128GB 6GB RAM, 256GB 8GB RAM
  - UFS 2.1
Misc
Colors Starry Night, Aurora Blue, Dream Powder Black, White
Models V1813BT, V1813BA M1803D5XA
SAR - 0.54 W/kg (head)     1.59 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100 HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
4G bands 1, 3, 5, 8, 34, 38, 39, 40, 41 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 27, 28, 29, 30, 34, 38, 39, 40, 41
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE (3CA) Cat18 1200/100 Mbps
Technology GSM / CDMA / HSPA / LTE GSM / CDMA / HSPA / EVDO / LTE
  CDMA 800 / 1900 & TD-SCDMA CDMA2000 1xEV-DO
Our Tests
Audio quality - Noise -93.0dB / Crosstalk -92.5dB
Battery (old) - Endurance rating 59h
Loudspeaker - Voice 68dB / Noise 70dB / Ring 81dB
Performance - AnTuTu: 270814 (v7) GeekBench: 9158 (v4.4) GFXBench: 34fps (ES 3.1 onscreen)
Platform
Chipset Qualcomm SDM670 Snapdragon 670 (10 nm)Qualcomm SDM710 Snapdragon 710 (10 nm) Qualcomm SDM845 Snapdragon 845 (10 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 (4x2.8 GHz Kryo 385 Gold & 4x1.8 GHz Kryo 385 Silver)
GPU Adreno 615Adreno 616 Adreno 630
OS Android 8.1 (Oreo) Android 8.0 (Oreo), upgradable to Android 10, MIUI 12
Selfie camera
Features HDR -
Single 12 MP, f/2.0, (wide), 1/2.8", 1.28µm 5 MP, f/2.0, (wide), 1/4.0", 1.4µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes No
Loudspeaker Yes Yes