Product
Vivo S1 Pro
Vivo S1 Pro
Apple iPhone 4s
Apple iPhone 4s
Battery
Charging 18W wired -
Stand-by - Up to 200 h (3G)
Talk time - Up to 8 h (3G)
Type 4500 mAh, non-removable Li-Po 1432 mAh, non-removable (5.3 Wh)
Body
Build Glass front, glass back, aluminum frame Glass front (Corning-made glass), glass back, stainless steel frame
Dimensions 159.3 x 75.2 x 8.7 mm (6.27 x 2.96 x 0.34 in) 115.2 x 58.6 x 9.3 mm (4.54 x 2.31 x 0.37 in)
SIM Nano-SIMNano-SIM + Nano-SIM Micro-SIM
Weight 186.7 g (6.60 oz) 140 g (4.94 oz)
  - Scratch-resistant glass back panel
Comms
Bluetooth 5.0, A2DP, LE 4.0, A2DP, LE
NFC No -
Positioning GPS, GLONASS, GALILEO, BDS GPS, A-GPS, GLONASS
Radio FM radio No
USB USB Type-C 2.0, OTG 2.0
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 b/g/n, hotspot
Display
Protection - Corning Gorilla Glass, oleophobic coating
Resolution 1080 x 2340 pixels, 19.5:9 ratio (~404 ppi density) 640 x 960 pixels, 3:2 ratio (~330 ppi density)
Size 6.38 inches, 99.9 cm2 (~83.4% screen-to-body ratio) 3.5 inches, 36.5 cm2 (~54.0% screen-to-body ratio)
Type Super AMOLED IPS LCD
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass Accelerometer, gyro, proximity, compass
Launch
Announced 2019, November 19. Released 2019, November 2011, October 04. Released 2011, October 14
Status Discontinued Discontinued
Main Camera
Features LED flash, HDR, panorama LED flash, panorama, HDR
Quad 48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) -
Single - 8 MP, f/2.4, 35mm (standard), 1/3.2", 1.4µm, AF
Video 1080p@30fps 1080p@30fps
Memory
Card slot microSDXC (uses shared SIM slot) No
Internal 128GB 8GB RAM 8GB 512MB RAM, 16GB 512MB RAM, 32GB 512MB RAM, 64GB 512MB RAM
Misc
Colors Knight Black, Fancy Sky Black, White
Models 1920, PD1945F_EX, 1920_20 A1431, A1387, iPhone4,1
SAR - 1.18 W/kg (head)     0.98 W/kg (body)    
SAR EU - 0.99 W/kg (head)     0.99 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 / 1900 / 2100
4G bands 1, 3, 5, 28, 38, 40, 41 -
Speed HSPA, LTE HSPA 14.4/5.76 Mbps
Technology GSM / HSPA / LTE GSM / CDMA / HSPA / EVDO
  - CDMA2000 1xEV-DO
Platform
Chipset Qualcomm SDM665 Snapdragon 665 (11 nm) Apple A5 (45 nm)
CPU Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) Dual-core 1.0 GHz Cortex-A9
GPU Adreno 610 PowerVR SGX543MP2
OS Android 9.0 (Pie), Funtouch 9.2 iOS 5, upgradable to iOS 9.3.6
Selfie camera
Features HDR -
Single 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm VGA, videocalling over Wi-Fi and 3G
Video 1080p@30fps 480p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
Tests
Audio quality - Noise -91.2dB / Crosstalk -93.0dB
Battery (old) - Endurance rating 45h
Camera - Photo / Video
Display - Contrast ratio: 1261:1 (nominal) / 2.269:1 (sunlight)
Loudspeaker - Voice 65dB / Noise 64dB / Ring 74dB