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Samsung Galaxy S Duos 2 vs Xiaomi Redmi A1 Plus

2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 900 / 2100 HSDPA 850 / 900 / 1900 / 2100  
4G Network LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)  
Available Available. Released 2013, December
Dimensions 21.5 x 63.1 x 10.6 mm 164.9 x 76.75 x 9.09mm  
Sim Type Dual SIM, dual call (dual stand-by) Dual Sim, Dual Standby (Nano-SIM)  
Weight 118 g 192 g  
Display Type TFT capacitive touchscreen, 16M colors IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   400 nits (typ)  
Display Size 480 x 800 pixels, 4.0 inches (~233 ppi pixel density) 6.53 Inches   720 x 1600 Pixels (~269 PPI)  
Multitouch Yes
Memory 4 GB internal (1.8 GB user available) 32GB Built-in, 2GB RAM  
Card slot microSD, up to 64 GB microSDXC (dedicated)  
RAM 768 MB
GPRS Yes Yes
EDGE Yes Yes
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot Wi-Fi 802.11 a/b/g/n, hotspot  
BlueTooth Yes, v4.0 with A2DP v5.0 with A2DP, LE  
USB Yes, microUSB v2.0 microUSB 2.0  
NFC No  
GPS Yes, with A-GPS support and GLONASS Yes + A-GPS support & Glonass, BDS  
Main Camera 5 MP, 2592?1944 pixels, autofocus, LED flash, Video: 720p@30fps Dual Camera: 8 MP, (wide) + 0.3 MP, Dual LED Flash   Phase detection, geo-tagging, touch focus, face detection, Video (1080p@30fps)  
Front Camera Yes, VGA 5 MP, HDR, Video (1080p@30fps)  
OS Android OS, v4.2 (Jelly Bean) Android 12 Go edition  
Chipset Mediatek MT6761 Helio A22 (12 nm)  
Processor Dual-core 1.2 GHz 2.0 Ghz Quad Core Cortex-A53  
GPU PowerVR GE6300  
Sensors Accelerometer, proximity, compass Accelerometer, Fingerprint (rear-mounted)  
Browser HTML5 HTML5  
Radio Stereo FM radio with RDS
Sound 3.5mm HeadJack, Loud Speaker, MP3/MP4/H.263/H.264/WMV player 3.5mm Audio Jack, 24-bit/192kHz audio, Speaker Phone  
Colors White, Black Light Green, Light Blue, Black  
Battery Li-Ion 1500 mAh battery (Li-ion Non removable), 5000 mAh   - Battery charging 10W  
StandBy Time (2G) / Up to 280 h (3G)
TalkTime (2G) / Up to 8 h (3G)
Misc Organizer, Document editor, Image editor, Google Search, Maps, Gmail, Calendar, , Voice memo/dial, Predictive text input, Speakerphone SMS(threaded view), MMS, Email, Push Mail, IM   Photo/video editor, Document viewer