Product
Vivo Z3i
Vivo Z3i
Xiaomi Mi 5s Plus
Xiaomi Mi 5s Plus
Battery
Charging 18W wired 18W wired, QC3
Type 3315 mAh, non-removable Li-Ion 3800 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) 154.6 x 77.7 x 8 mm (6.09 x 3.06 x 0.31 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 164 g (5.78 oz) 168 g (5.93 oz)
Comms
Bluetooth 4.2, A2DP, EDR, LE, aptX 4.2, A2DP, LE
Infrared port - Yes
NFC No Yes
Positioning GPS, GLONASS, BDS GPS, GLONASS, BDS
Radio FM radio No
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
Resolution 1080 x 2280 pixels, 19:9 ratio (~400 ppi density) 1080 x 1920 pixels, 16:9 ratio (~386 ppi density)
Size 6.3 inches, 99.1 cm2 (~84.0% screen-to-body ratio) 5.7 inches, 89.6 cm2 (~74.6% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer
Launch
Announced 2018, October. Released 2018, October 2016, September. Released 2016, October
Status Discontinued Discontinued
Main Camera
Dual 16 MP, f/2.0, PDAF 2 MP, f/2.4, (depth) 13 MP, f/2.0, 1/3.1", 1.12µm, PDAF 13 MP B/W, f/2.0, 1/3.1", 1.12µm
Features LED flash, HDR, panorama Dual-LED dual-tone flash, HDR, panorama
Video 1080p@30fps 4K@30fps, 1080p@30fps
Memory
Card slot microSDXC (dedicated slot) No
Internal 128GB 6GB RAM 64GB 4GB RAM, 128GB 6GB RAM
  eMMC 5.1 -
Misc
Colors Aurora blue, Millenium Pink Silver, Gray, Gold, Rose Gold
Models - 2016070
SAR - 1.16 W/kg (head)     1.47 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, 5, 7, 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 -83.9dB / Crosstalk -84.9dB
Battery (old) - Endurance rating 104h
Camera - Photo / Video
Display - Contrast ratio: 1448:1 (nominal), 2.884 (sunlight)
Loudspeaker - Voice 65dB / Noise 68dB / Ring 70dB
Performance - Basemark OS II 2.0: 2434Basemark X: 36062
Platform
Chipset Mediatek MT6771 Helio P60 (12 nm) Qualcomm MSM8996 Snapdragon 821 (14 nm)
CPU Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53) Quad-core (2x2.35 GHz Kryo & 2x2.2 GHz Kryo)
GPU Mali-G72 MP3 Adreno 530
OS Android 8.1 (Oreo) Android 6.0 (Marshmallow), upgradable to 8.0 (Oreo), MIUI
Selfie camera
Features HDR -
Single 24 MP, f/2.0, 26mm (wide), 1/2.8", 0.9µm 4 MP, f/2.0, 1/3", 2µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes