Product
Vivo Z3i
Vivo Z3i
Apple iPhone 5s
Apple iPhone 5s
Battery
Charging 18W wired -
Stand-by - Up to 250 h (3G)
Talk time - Up to 10 h (3G)
Type 3315 mAh, non-removable Li-Po 1560 mAh, non-removable (5.92 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) 123.8 x 58.6 x 7.6 mm (4.87 x 2.31 x 0.30 in)
SIM Nano-SIM + Nano-SIM Nano-SIM
Weight 164 g (5.78 oz) 112 g (3.95 oz)
Comms
Bluetooth 4.2, A2DP, EDR, LE, aptX 4.0, A2DP
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS
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, dual-band, hotspot
Display
Protection - Corning Gorilla Glass, oleophobic coating
Resolution 1080 x 2280 pixels, 19:9 ratio (~400 ppi density) 640 x 1136 pixels, 16:9 ratio (~326 ppi density)
Size 6.3 inches, 99.1 cm2 (~84.0% screen-to-body ratio) 4.0 inches, 44.1 cm2 (~60.8% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Fingerprint (front-mounted), accelerometer, gyro, proximity, compass
Launch
Announced 2018, October. Released 2018, October 2013, September 10. Released 2013, September 20
Status Discontinued Discontinued
Main Camera
Dual 16 MP, f/2.0, PDAF 2 MP, f/2.4, (depth) -
Features LED flash, HDR, panorama Dual-LED dual-tone flash, HDR
Single - 8 MP, f/2.2, 29mm (standard), 1/3.0", 1.5µm, AF
Video 1080p@30fps 1080p@30fps, 720p@120fps
Memory
Card slot microSDXC (dedicated slot) No
Internal 128GB 6GB RAM 16GB 1GB RAM, 32GB 1GB RAM, 64GB 1GB RAM
  eMMC 5.1 -
Misc
Colors Aurora blue, Millenium Pink Space Gray, White/Silver, Gold
Models - A1453, A1457, A1518, A1528, A1530, A1533, iPhone6,1, iPhone6,2
SAR - 1.12 W/kg (head)     1.18 W/kg (body)    
SAR EU - 1.00 W/kg (head)     0.80 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - all models
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700 / 1900 / 2100 - A1533 (GSM), A1453
4G bands 1, 3, 5, 8, 34, 38, 39, 40, 41 1, 2, 3, 4, 5, 8, 13, 17, 19, 20, 25 - A1533 GSM, A1533 CDMA
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE Cat3 100/50 Mbps, EV-DO Rev.A 3.1 Mbps
Technology GSM / CDMA / HSPA / LTE GSM / CDMA / HSPA / EVDO / LTE
  CDMA 800 / 1900 & TD-SCDMA 1, 2, 3, 5, 7, 8, 20, 38, 39, 40 - A1530
Platform
Chipset Mediatek MT6771 Helio P60 (12 nm) Apple A7 (28 nm)
CPU Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53) Dual-core 1.3 GHz Cyclone (ARM v8-based)
GPU Mali-G72 MP3 PowerVR G6430 (quad-core graphics)
OS Android 8.1 (Oreo) iOS 7, upgradable to iOS 12.5.7
Selfie camera
Features HDR face detection, HDR, FaceTime over Wi-Fi or Cellular
Single 24 MP, f/2.0, 26mm (wide), 1/2.8", 0.9µm 1.2 MP, f/2.4, 31mm (standard)
Video 1080p@30fps 720p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
  - 16-bit/44.1kHz audio
Tests
Audio quality - Noise -93.6dB / Crosstalk -90.3dB
Battery (old) - Endurance rating 54h
Camera - Photo / Video
Display - Contrast ratio: 1219:1 (nominal) / 3.565:1 (sunlight)
Loudspeaker - Voice 68dB / Noise 66dB / Ring 69dB
Performance - Basemark X: 14341