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Samsung Galaxy A8 vs Vivo Y73

2G Network GSM 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 2100  
4G Network LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800) LTE band 1(2100), 5(850), 8(900), 40(2300)  
Dimensions N/a 161.2 x 74.3 x 7.38mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)  
Weight N/a 170 g  
Display Type Super AMOLED capacitive touchscreen, 16M colors AMOLED Capacitive Touchscreen, 16M Colors, Multitouch   HDR10, 430 nits (typ), 570 nits (HBM)  
Display Size 5.5 inches, 1080 x 1920 pixels (~401 ppi pixel density) 6.4 Inches   1080 x 2400 Pixels (~409 PPI)  
Multitouch Yes
Protection Corning Gorilla Glass 4
Memory 16GB built-in 128GB Built-in, 8GB RAM  
Card slot microSD card (supports up to 64GB) microSDXC (dedicated slot)  
RAM 2GB RAM
GPRS Yes Yes
WLAN WLAN (Wi-Fi 802.11 a/b/g/n Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot  
BlueTooth Bluetooth v4.0 with A2DP v5.0 with A2DP, LE  
USB USB (microUSB v2.0) USB Type-C 2.0, OTG  
NFC No  
GPS Yes Yes + A-GPS support & Glonass, BDS, GALILEO  
Main Camera 16 MP, 5312 x 2988 pixels, autofocus, LED flash, Geo-tagging, touch focus, face detection, panorama, HDR, Video 1080p@30fps, 5 MP, 1080p Triple Camera: 664 MP, f/1.8, 26mm (wide), 1/1.72", PDAF + 2 MP, f/2.4, (macro) + 2 MP, f/2.4, (depth), LED Flash   Geo-tagging, Phase detection, Panorama, HDR, Video (4K@30fps, 1080p@30fps, gyro-EIS)  
Front Camera 16 MP, f/2.0, (wide), HDR, Video (1080p@30fps)  
OS Android OS, v5.1 (Lollipop) Android 11 OS  
Chipset Qualcomm MSM89 Mediatek Helio G95 (12 nm)  
Processor 1.4 GHz Quad-Core Cortex-A53, 1.0 GHz Quad-Core Cortex-A53 Octa-core (2 x 2.05 GHz Cortex-A76 + 6 x 2.0 GHz Cortex-A55)  
GPU GPU: Adreno 405 Mali-G76 MC4  
Sensors Accelerometer, proximity, compass Accelerometer, Compass, Fingerprint (under display, optical), Gyro, Proximity  
Browser HTML5 HTML5  
Sound FM radio with RDS; recording, 3.5mm audio jack, MP4/WMV/H.264 player, MP3/WAV/WMA/eAAC+/FLAC player, YouTube, Google Talk, Games (built-in + downloadable) 3.5mm Audio Jack, MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Speaker Phone  
Colors Pearl White, Midnight Black, Champagne Gold Diamond Flare, Roman Black  
Battery Li-Ion 3050 mAh non removable (Li-Po Non removable), 4000 mAh   - Fast charging 33W wired, 61% in 30 min (advertised)  
Misc GPS + A-GPS support & GLONASS, Nano-SIM card support only, Active noise cancellation with dedicated mic, ANT+ support, Photo/video editor, Google Search, Maps, Gmail, Picasa, Document viewer, Speakerphone SMS(threaded view), MMS, Email, Push Mail, IM   Active noise cancellation with dedicated mic, Document viewer, Photo/video editor