Product
Vivo S1 Pro
Vivo S1 Pro
₹20,990
Xiaomi Mi A3
Xiaomi Mi A3
₹14,999
Battery
Charging 18W wired 18W wired, QC3
Type 4500 mAh, non-removable Li-Po 4030 mAh, non-removable
Body
Build Glass front, glass back, aluminum frame Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame
Dimensions 159.3 x 75.2 x 8.7 mm (6.27 x 2.96 x 0.34 in) 153.5 x 71.9 x 8.5 mm (6.04 x 2.83 x 0.33 in)
SIM Nano-SIMNano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 186.7 g (6.60 oz) 173.8 g (6.14 oz)
Comms
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE, aptX HD
Infrared port - Yes
NFC No No
Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS, BDS
Radio FM radio FM radio
USB USB Type-C 2.0, OTG USB Type-C 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, Wi-Fi Direct
Display
Protection - Corning Gorilla Glass 5
Resolution 1080 x 2340 pixels, 19.5:9 ratio (~404 ppi density) 720 x 1560 pixels, 19.5:9 ratio (~282 ppi density)
Size 6.38 inches, 99.9 cm2 (~83.4% screen-to-body ratio) 6.09 inches, 91.0 cm2 (~82.5% screen-to-body ratio)
Type Super AMOLED Super AMOLED
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Launch
Announced 2019, November 19. Released 2019, November 2019, July 17. Released 2019, July 24
Status Discontinued Discontinued
Main Camera
Features LED flash, HDR, panorama LED flash, HDR, panorama
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) -
Triple - 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, (depth)
Video 1080p@30fps 4K@30fps, 1080p@30/60/120fps
Memory
Card slot microSDXC (uses shared SIM slot) microSDXC (uses shared SIM slot)
Internal 128GB 8GB RAM 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM
  - UFS 2.1
Misc
Colors Knight Black, Fancy Sky Kind of Gray, Not just Blue, More than White
Models 1920, PD1945F_EX, 1920_20 M1906F9SH, M1906F9SI
SAR - 0.53 W/kg (head)     0.72 W/kg (body)    
SAR EU - 0.30 W/kg (head)     1.10 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 / 1700 / 1900 / 2100
4G bands 1, 3, 5, 28, 38, 40, 41 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 400/50 Mbps
Technology GSM / HSPA / LTE GSM / HSPA / LTE
Our Tests
Audio quality - Noise -93.7dB / Crosstalk -93.0dB
Battery (old) - Endurance rating 101h
Camera - Photo / Video
Display - 363 nits max brightness (measured)
Loudspeaker - Voice 74dB / Noise 74dB / Ring 81dB
Performance - Basemark OS II 2.0: 2345Basemark X: 17948
Platform
Chipset Qualcomm SDM665 Snapdragon 665 (11 nm) Qualcomm SDM665 Snapdragon 665 (11 nm)
CPU Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU Adreno 610 Adreno 610
OS Android 9.0 (Pie), Funtouch 9.2 Android 9.0 (Pie), upgradable to Android 11, Android One
Selfie camera
Features HDR HDR
Single 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
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