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Microsoft Lumia 640 XL 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), 5(850), 8(900), 40(2300)  
Dimensions 157.9 x 81.5 x 9 mm 161.2 x 74.3 x 7.38mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)  
Weight 171 g 170 g  
Display Type IPS LCD capacitive touchscreen, 16M colors, ClearBlack display AMOLED Capacitive Touchscreen, 16M Colors, Multitouch   HDR10, 430 nits (typ), 570 nits (HBM)  
Display Size 5.7 inches (~69.1% screen to body ratio), 720 x 1280 pixels (~259 ppi pixel density) 6.4 Inches   1080 x 2400 Pixels (~409 PPI)  
Multitouch Yes
Protection Corning Gorilla Glass 3
Memory 8GB built-in 128GB Built-in, 8GB RAM  
Card slot microSD card (supports up to 128GB) microSDXC (dedicated slot)  
RAM 1GB RAM
GPRS Yes 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 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 13 MP, 4128 x 3096 pixels, Carl Zeiss optics, autofocus, LED flash, 1/3'' sensor size, Video (1080p@30fps), 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 5 MP, 1080p 16 MP, f/2.0, (wide), HDR, Video (1080p@30fps)  
OS Microsoft Windows Phone 8.1 with Lumia Denim Android 11 OS  
Chipset Qualcomm Snapd Mediatek Helio G95 (12 nm)  
Processor 1.2 GHz Quad-Core Cortex-A7 Octa-core (2 x 2.05 GHz Cortex-A76 + 6 x 2.0 GHz Cortex-A55)  
GPU GPU: Adreno 305 Mali-G76 MC4  
Sensors Accelerometer, proximity, compass Accelerometer, Compass, Fingerprint (under display, optical), Gyro, Proximity  
Browser HTML5 HTML5  
Sound FM radio, 3.5mm audio jack, MP4/H.264/H.263/WMV player, MP3/WAV/eAAC+/WMA player, Video editor, Games (built-in) 3.5mm Audio Jack, MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Speaker Phone  
Colors Matte cyan, Orange, Black, Matte white, Glossy white Diamond Flare, Roman Black  
Battery Talk-time up to 31 hrs 20 min 3000 mAh (Li-Po Non removable), 4000 mAh   - Fast charging 33W wired, 61% in 30 min (advertised)  
StandBy Time Stand-by up to 936 hrs
TalkTime Talk-time up to 31 hrs 20 min 3000 mAh
Misc GPS + A-GPS support and GLONASS, Micro-SIM card, Active noise cancellation with dedicated mic, Document viewer/editor, Speakerphone SMS(threaded view), MMS, Email, Push Mail, IM   Active noise cancellation with dedicated mic, Document viewer, Photo/video editor