Product
Vivo Z3i
Vivo Z3i
Apple iPhone 7 Plus
Apple iPhone 7 Plus
Battery
Charging 18W wired -
Stand-by - Up to 384 h (3G)
Talk time - Up to 21 h (3G)
Type 3315 mAh, non-removable Li-Ion 2900 mAh, non-removable (11.1 Wh)
Body
Build - Glass front (Corning-made glass), aluminum back, aluminum frame
Dimensions 156 x 75.6 x 8.1 mm (6.14 x 2.98 x 0.32 in) 158.2 x 77.9 x 7.3 mm (6.23 x 3.07 x 0.29 in)
SIM Nano-SIM + Nano-SIM Nano-SIM
Weight 164 g (5.78 oz) 188 g (6.63 oz)
  - IP67 dust/water resistant (up to 1m for 30 min)Apple Pay (Visa, MasterCard, AMEX certified)
Comms
Bluetooth 4.2, A2DP, EDR, LE, aptX 4.2, A2DP, LE
NFC No Yes
Positioning GPS, GLONASS, BDS GPS, GLONASS, GALILEO, QZSS
Radio FM radio No
USB microUSB 2.0, OTG Lightning, USB 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, hotspot
Display
Protection - Ion-strengthened glass
Resolution 1080 x 2280 pixels, 19:9 ratio (~400 ppi density) 1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
Size 6.3 inches, 99.1 cm2 (~84.0% screen-to-body ratio) 5.5 inches, 83.4 cm2 (~67.7% screen-to-body ratio)
Type IPS LCD Retina IPS LCD, 625 nits (typ)
  - 3D Touch display & home button
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, barometer
Launch
Announced 2018, October. Released 2018, October 2016, September 07. Released 2016, September 16
Status Discontinued Discontinued
Main Camera
Dual 16 MP, f/2.0, PDAF 2 MP, f/2.4, (depth) 12 MP, f/1.8, 28mm (wide), 1/3.0", PDAF, OIS12 MP, f/2.8, 56mm (telephoto), 1/3.6", AF, 2x optical zoom
Features LED flash, HDR, panorama Quad-LED dual-tone flash, HDR
Video 1080p@30fps 4K@30fps, 1080p@30/60/120fps, 720p@240fps
Memory
Card slot microSDXC (dedicated slot) No
Internal 128GB 6GB RAM 32GB 3GB RAM, 128GB 3GB RAM, 256GB 3GB RAM
  eMMC 5.1 NVMe
Misc
Colors Aurora blue, Millenium Pink Jet Black, Black, Silver, Gold, Rose Gold, Red
Models - A1661, A1784, A1785, A1786, iPhone9,4, iPhone9,2
SAR - 1.19 W/kg (head)     1.19 W/kg (body)    
SAR EU - 1.24 W/kg (head)     1.00 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - A1661, A1784
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - A1661, A1784
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, 38, 39, 40, 41 - A1661, A1784
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE (3CA) Cat9 450/50 Mbps, EV-DO Rev.A 3.1 Mbps
Technology GSM / CDMA / HSPA / LTE GSM / CDMA / HSPA / EVDO / LTE
  CDMA 800 / 1900 & TD-SCDMA CDMA2000 1xEV-DO & TD-SCDMA - A1661
Platform
Chipset Mediatek MT6771 Helio P60 (12 nm) Apple A10 Fusion (16 nm)
CPU Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53) Quad-core 2.34 GHz (2x Hurricane + 2x Zephyr)
GPU Mali-G72 MP3 PowerVR Series7XT Plus (six-core graphics)
OS Android 8.1 (Oreo) iOS 10.0.1, upgradable to iOS 15.8.4
Selfie camera
Features HDR Face detection, HDR
Single 24 MP, f/2.0, 26mm (wide), 1/2.8", 0.9µm 7 MP, f/2.2, 32mm (standard)
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes No
Loudspeaker Yes Yes, with stereo speakers
Tests
Audio quality - Noise -93.1dB / Crosstalk -80.5dB
Battery (old) - Endurance rating 75h
Camera - Photo / Video
Display - Contrast ratio: 1398:1 (nominal), 3.588 (sunlight)
Loudspeaker - Voice 68dB / Noise 72dB / Ring 72dB
Performance - Basemark OS II 2.0: 3796