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Sony Xperia S vs Vivo Y21d 8GB

2G Network GSM 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 2100  
4G Network LTE band 1(2100), 3(1800), 5(850), 8(900), 28(700), 38(2600), 40(2300), 41(2500)  
Dimensions 128 x 64 x 10.6 mm 166.14 x 77.01 x 8.39 mm  
Sim Type Nano-SIM + Nano-SIM  
Weight 144 g 209 g  
Display Type 16M colors, LED-backlit LCD, captive touchscreen IPS LCD Capacitive Touchscreen   90Hz, 1000 nits Brightness  
Display Size 720 x 1280 pixels, 4.3 inches, 6.68 Inches   720 x 1608 Pixels (~264 PPI)  
Memory 32GB built-in 1GB RAM 128GB Built-in, 8GB RAM, eMMC 5.1  
Card slot microSD Card, (supports up to 2TB)  
GPRS Yes
WLAN WLAN (Wi-Fi 802.11 b/g/n Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot  
BlueTooth Bluetooth v2.1 with A2DP v5.2 with A2DP, LE  
USB USB USB Type-C 2.0, OTG  
NFC No  
GPS Yes Yes + A-GPS support & Glonass, BDS, GALILEO, QZSS  
Main Camera 12MP, 4000x3000 pixels, Video, autofocus, LED Flash, Geo-tagging, touch focus, face & smile detection, 3D sweep panorama, image stabilization, Dual Camera: 50 MP, f/1.8 + 0.08 MP, f/2.2, LED Flash   Night, Portrait, Video, Live Photo, Slo-mo, Time-lapse, Panorama, Video  
Front Camera 1.3MP 5 MP  
OS Android OS, v2.3 (Gingerbread), upgradable to v4.x Android 15 OS  
Chipset Unisoc T7225 (12 nm)  
Processor Dual-core 1.5 GHz Octa-Core (2 × 1.8 GHz + 6 × 1.8 GHz)  
GPU Arm Mali G57  
Sensors Accelerometer, gyro, proximity & compass Accelerometer, Compass, Fingerprint (side mounted), Gyro, Proximity  
Browser HTML5, Adobe Flash HTML5  
Sound Stereo FM radio with RDS, TV launcher, 3.5mm audio jack, MP4/H.263/H.264/WMV player, MP3/eAAC+/WAV/WMA player, SNS integration, YouTube, Google Talk, Games (built-in + downloadable) 3.5mm Audio Jack, Speaker Phone  
Colors White, Black Coral Red, Jade Green  
Battery Talk time Up to 7 h 30 m Stand-by Up to 450 h Li-ion 6500 mAh   - Fast charging 44W  
StandBy Time Talk time Up to 7 h 30 m Stand-by Up to 450 h
Misc GPS + A-GPS support and GLONASS, GPU, Organizer, Document viewer, Voice memo/dial, Predictive text input SMS(threaded view), MMS, Email, Push Mail, IM   Document viewer, Photo/video editor