Product
Vivo Z3
Vivo Z3
Xiaomi Mi 9 Lite
Xiaomi Mi 9 Lite
Battery
Charging - 18W wired
Type 3315 mAh, non-removable Li-Po 4030 mAh, non-removable
Body
Build - Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
Dimensions 156 x 75.6 x 8.1 mm (6.14 x 2.98 x 0.32 in) 156.8 x 74.5 x 8.7 mm (6.17 x 2.93 x 0.34 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 164 g (5.78 oz) 179 g (6.31 oz)
Comms
Bluetooth 4.2, A2DP, EDR, LE, aptX 5.0, A2DP, LE, aptX HD
Infrared port - Yes
NFC No Yes
Positioning GPS, GLONASS, BDS GPS, GLONASS, GALILEO, BDS
Radio FM radio FM radio
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 5
Resolution 1080 x 2280 pixels, 19:9 ratio (~400 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
Size 6.3 inches, 99.1 cm2 (~84.0% screen-to-body ratio) 6.39 inches, 100.2 cm2 (~85.8% screen-to-body ratio)
Type IPS LCD Super AMOLED, HDR, 430 nits (typ)
Features
Sensors Infrared Face ID, fingerprint (rear-mounted), accelerometer, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Launch
Announced 2018, October. Released 2018, October 2019, September 16. Released 2019, September 16
Status Discontinued Discontinued
Main Camera
Dual 16 MP, f/2.0, PDAF 2 MP, f/2.4, (depth) -
Features LED flash, HDR, panorama LED flash, HDR, panorama
Triple - 48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, (ultrawide), 1/4.0", 1.12µm 2 MP, (depth)
Video 1080p@30fps 4K@30fps, 1080p@30/60/120fps, 720p@960fps
Memory
Card slot microSDXC (dedicated slot) microSDXC (uses shared SIM slot)
Internal 64GB 4GB RAM, 64GB 6GB RAM, 128GB 6GB RAM 64GB 6GB RAM, 128GB 6GB RAM
  - UFS 2.1
Misc
Colors Starry Night, Aurora Blue, Dream Powder Pearl White, Aurora Blue, Onyx Grey
Models V1813BT, V1813BA M1904F3BG
SAR - 1.19 W/kg (head)     1.15 W/kg (body)    
SAR EU - 1.42 W/kg (head)     1.40 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 3, 5, 8, 34, 38, 39, 40, 41 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40
Speed HSPA, LTE HSPA, LTE
Technology GSM / CDMA / HSPA / LTE GSM / HSPA / LTE
  CDMA 800 / 1900 & TD-SCDMA -
Our Tests
Audio quality - Noise -90.3dB / Crosstalk -93.1dB
Battery (old) - Endurance rating 106h
Camera - Photo / Video
Display - 597 nits max brightness (measured)
Loudspeaker - -30.2 LUFS (Below average)
Performance - AnTuTu: 175478 (v7), 215277 (v8) GeekBench: 5989 (v4.4), 1518 (v5.1) GFXBench: 12fps (ES 3.1 onscreen)
Platform
Chipset Qualcomm SDM670 Snapdragon 670 (10 nm)Qualcomm SDM710 Snapdragon 710 (10 nm) Qualcomm SDM710 Snapdragon 710 (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 (2x2.2 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver)
GPU Adreno 615Adreno 616 Adreno 616
OS Android 8.1 (Oreo) Android 9.0 (Pie), upgradable to Android 10, MIUI 11
Selfie camera
Features HDR HDR
Single 12 MP, f/2.0, (wide), 1/2.8", 1.28µm 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes