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Samsung Galaxy A21s vs Xiaomi Redmi A1 Plus

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   LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)  
Dimensions 163.7 x 75.3 x 8.9 mm   164.9 x 76.75 x 9.09mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)   Dual Sim, Dual Standby (Nano-SIM)  
Weight 192 g   192 g  
Display Type PLS TFT Capacitive touchscreen, 16M Colors, Multitouch   IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   400 nits (typ)  
Display Size 720 x 1600 Pixels (~270 PPI)   6.53 Inches   720 x 1600 Pixels (~269 PPI)  
Memory 64GB Built-in, 4/6GB RAM   32GB Built-in, 2GB RAM  
Card slot microSD card (supports up to 512GB) (dedicated slot)   microSDXC (dedicated)  
GPRS Yes Yes
EDGE Yes Yes
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot   Wi-Fi 802.11 a/b/g/n, hotspot  
BlueTooth v5.0 with A2DP, LE   v5.0 with A2DP, LE  
USB 2.0, Type-C 1.0 reversible connector   microUSB 2.0  
NFC Yes   No  
GPS Yes + A-GPS support & Glonass, BDS, GALILEO   Yes + A-GPS support & Glonass, BDS  
Main Camera Geo-tagging, touch focus, face detection, panorama, HDR, Video ([email protected])   Dual Camera: 8 MP, (wide) + 0.3 MP, Dual LED Flash   Phase detection, geo-tagging, touch focus, face detection, Video (1080p@30fps)  
Front Camera 13 MP, f/2.2, (wide), 1/3.1, Video ([email protected])   5 MP, HDR, Video (1080p@30fps)  
OS Android 10 OS   Android 12 Go edition  
Chipset Exynos 850 (8nm)   Mediatek MT6761 Helio A22 (12 nm)  
Processor Octa-core (4 x 2.0 GHz Cortex-A55 + 4 x 2.0 GHz Cortex-A55)   2.0 Ghz Quad Core Cortex-A53  
GPU Mali-G52   PowerVR GE6300  
Sensors Accelerometer, Fingerprint (rear mounted), Gyro, Proximity   Accelerometer, Fingerprint (rear-mounted)  
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, 24-bit/192kHz audio, Speaker Phone  
Colors Black, White, Blue, Red   Light Green, Light Blue, Black  
Battery - Fast battery charging 15W   (Li-ion Non removable), 5000 mAh   - Battery charging 10W  
Misc Active noise cancellation with dedicated mic, ANT+ support, Photo/video editor, Document viewer   SMS(threaded view), MMS, Email, Push Mail, IM   Photo/video editor, Document viewer