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Nokia Lumia 1520 vs Realme C51 128GB

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), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)  
Available Coming soon. Exp. release 2013, Q4
Dimensions 167.2 x 76.7 x 8 mm  
Sim Type Nano-SIM Dual Sim, Dual Standby (Nano-SIM)  
Weight 209 g (7.37 oz) 186 g  
Display Type IPS LCD capacitive touchscreen, 16M colors IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   90Hz, 560 nits (peak)  
Display Size 1080 x 1920 pixels, 6.0 inches (~367 ppi pixel density) 6.74 Inches   720 x 1600 Pixels (~260 PPI)  
Protection Panda Glass  
Memory 32 GB internal, microSD up to 64 GB 128GB Built-in, 4GB RAM  
Card slot microSDXC (dedicated slot)  
RAM 2 GB
GPRS Yes Yes
EDGE Up to 236.8 kbps
3G Yes
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band  
BlueTooth Yes, v4.0 with A2DP v5.0 with A2DP, LE  
USB Yes, microUSB v2.0 USB Type-C 2.0  
NFC Yes  
GPS Yes, with A-GPS support and GLONASS Yes + A-GPS support, & GLONASS, BDS, GALILEO  
Main Camera 20 MP, Carl Zeiss optics, optical image stabilization, autofocus, dual-LED flash, 1080p video recording Dual Camera: 50 MP, f/1.8, 27mm (wide), 1/2.76", PDAF + 0.08 MP, f/3.0, (depth), LED Flash   HDR, panorama, Video (1080p@30fps)  
Front Camera 1.2 MP 720p video recording 5 MP, f/2.2, 28mm (wide), 1/5", HDR, Video (720p@30fps)  
OS Microsoft Windows Phone 8 Black Android 13 OS  
Chipset Unisoc Tiger T612 (12 nm)  
Processor Quad-core 2.2 GHz Krait 400 Octa-core (2 x 1.8 GHz Cortex-A75 + 6 x 1.8 GHz Cortex-A55)  
GPU Mali-G57  
Sensors Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML5 HTML5  
Radio FM radio
Sound 3.5mm HeadJack, Loud Speaker, Dolby Headphone sound enhancement 3.5mm Audio Jack, Speaker Phone  
Colors Yellow, white, black, red Mint Green, Carbon Black  
Battery Non-removable Li-Ion 3400 mAh battery (BV-4BW) (Li-Po Non removable), 5000 mAh   - Fast charging 33W wired, 0-50% in 28 min (advertised)  
StandBy Time Up to 768 h (2G) / Up to 768 h (3G)
TalkTime Up to 27 h 40 min (2G) / Up to 25 h (3G)
Misc SMS(threaded view), MMS, Email, Push Mail, IM   NFC 360? (market/region dependent), Glass front, plastic frame, plastic back, Photo/video editor, Document viewer