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Samsung Galaxy A31 vs Samsung Galaxy A73

2G Network SIM1: GSM 850 / 900 / 1800 / 1900SIM2: 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 / 1900 / 2100  
4G Network LTE band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300), 41(2500)   LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300), 41(2500)  
5G Network SA/NSA  
Dimensions 159.3 x 73.1 x 8.6 mm   163.7 x 76.1 x 7.6 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)   Hybrid Dual SIM, Dual Standby, (Nano-SIM)  
Weight 185 g   181 g  
Display Type Super AMOLED Capacitive Touchscreen, 16M Colors, Multitouch   Super AMOLED Plus Capacitive touchscreen, Multitouch   90Hz  
Display Size 1080 x 2400 Pixels (~411 PPI)   6.7 Inches   1080 x 2400 Pixels (~393 PPI)  
Protection Corning Gorilla Glass  
Memory 128GB Built-in, 4GB RAM   256GB Built-in, 8GB RAM  
Card slot microSD Card, (supports up to 512GB)   microSD Card, (supports up to 1TB)  
GPRS Yes Yes
EDGE Yes Yes
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot   Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot  
BlueTooth v5.0 with A2DP, LE   v5.0 with A2DP, LE  
USB 2.0, Type-C 1.0 reversible connector, USB On-The-Go   USB Type-C 2.0, USB On-The-Go  
NFC Yes   Yes  
GPS Yes + A-GPS support & Glonass, BDS, GALILEO   Yes + A-GPS support & Glonass, BDS, GALILEO, BDS  
Main Camera Geo-tagging, touch focus, face detection, panorama, HDR, Video ([email protected], [email protected])   Quad Camera: 108 MP, f/1.8, (wide), PDAF, OIS + 12 MP, f/2.2, (ultrawide) + 5 MP, f/2.4, (macro) + 5 MP, f/2.4, (depth), LED Flash   panorama, HDR, Video (4K@30fps, 1080p@30/60fps; gyro-EIS)  
Front Camera 20 MP, f/2.2, (wide), HDR, Video ([email protected])   32 MP, f/2.2, 26mm (wide), 1/2.8", HDR, Video (4K@30fps, 1080p@30fps)  
OS Android 10.0 OS   Android 12 OS  
Chipset Helio P65 SoC   Qualcomm SM7325 Snapdragon 778G 5G (6 nm)  
Processor 2Ghz Octa Core   Octa-core (4 x 2.4 GHz Kryo 670 + 4 x 1.8 GHz Kryo 670)  
GPU Adreno 642L  
Sensors Accelerometer, Compass, Fingerprint (under display, optical), Gyro, Proximity   Accelerometer, gyro, proximity, compass, Fingerprint (under display, optical)  
Browser HTML5   HTML5  
Sound 3.5mm Audio Jack, MP3/WAV/WMA/eAAC+/FLAC player, MP4/WMV/H.265 player, Speaker Phone   3.5mm Audio Jack (Unspecified), Speaker Phone  
Colors Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White   Gray, Mint, White  
Battery - Fast battery charging 15W   (Li-Po Non removable), 5000 mAh   - Fast charging 25W  
Misc Active noise cancellation with dedicated mic, Photo/video editor, Document viewer   SMS(threaded view), MMS, Email, Push Mail, IM   NFC (market dependent), IP67 dust/water resistant (up to 1m for 30 mins), Active noise cancellation with dedicated mic, Photo/video editor, Document viewer