Product
Vivo Z3i
Vivo Z3i
Vivo iQOO Neo 855 Racing
Vivo iQOO Neo 855 Racing
Battery
Charging 18W wired 33W wired
Type 3315 mAh, non-removable 4500 mAh, non-removable
Body
Build - Glass front, glass back, aluminum frame
Dimensions 156 x 75.6 x 8.1 mm (6.14 x 2.98 x 0.32 in) 159.5 x 75.2 x 8.1 mm (6.28 x 2.96 x 0.32 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 164 g (5.78 oz) 198.5 g (7.02 oz)
Comms
Bluetooth 4.2, A2DP, EDR, LE, aptX 5.0, A2DP, LE, aptX
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS, BDS, GALILEO
Radio FM radio No
USB microUSB 2.0, OTG USB Type-C, OTG
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
Resolution 1080 x 2280 pixels, 19:9 ratio (~400 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~404 ppi density)
Size 6.3 inches, 99.1 cm2 (~84.0% screen-to-body ratio) 6.38 inches, 99.9 cm2 (~83.3% screen-to-body ratio)
Type IPS LCD Super AMOLED, HDR10
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Launch
Announced 2018, October. Released 2018, October 2019, December. Released 2019, December
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 - 12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF 8 MP, f/2.2, (wide) 2 MP, f/2.4, (depth)
Video 1080p@30fps 4K@30fps, 1080p@30fps
Memory
Card slot microSDXC (dedicated slot) No
Internal 128GB 6GB RAM 128GB 8GB RAM, 128GB 12GB RAM
  eMMC 5.1 UFS 3.0
Misc
Colors Aurora blue, Millenium Pink Iceland Aurora, Carbon Black, Light Mint
Models - V1936AL, V1936TL
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 2100
4G bands 1, 3, 5, 8, 34, 38, 39, 40, 41 1, 3, 4, 5, 8, 19, 34, 38, 39, 40, 41
Speed HSPA, LTE HSPA, LTE
Technology GSM / CDMA / HSPA / LTE GSM / CDMA / HSPA / LTE
  CDMA 800 / 1900 & TD-SCDMA CDMA 800 & TD-SCDMA
Platform
Chipset Mediatek MT6771 Helio P60 (12 nm) Qualcomm SM8150 Snapdragon 855+ (7 nm)
CPU Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53) Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.8 GHz Kryo 485)
GPU Mali-G72 MP3 Adreno 640 (700 MHz)
OS Android 8.1 (Oreo) Android 9.0 (Pie), Funtouch 9
Selfie camera
Features HDR HDR
Single 24 MP, f/2.0, 26mm (wide), 1/2.8", 0.9µm 16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
  - 32-bit/192kHz Hi-Res audio