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Samsung Galaxy M21
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Samsung Galaxy M21

Xiaomi Redmi Note 9
Our video review on Youtube
Network
Technology GSM / HSPA / LTE GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Network 1, 3, 5, 7, 8, 20, 38, 40, 41 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41
Speed HSPA, LTE HSPA, LTE
Launch
Announced 2020, March 18 2020, April 30
Status Available. Released 2020, March 23 Available. Released 2020, May 12
Body
Dimensions 159 x 75.1 x 8.9 mm (6.26 x 2.96 x 0.35 in) 162.3 x 77.2 x 8.9 mm (6.39 x 3.04 x 0.35 in)
3D size compare
Weight 188 g (6.63 oz) 199 g (7.02 oz)
Build Glass front (Gorilla Glass 3), plastic back, plastic frame Glass front (Gorilla Glass 5), plastic frame, plastic back
SIM Nano-SIM
Nano-SIM + Nano-SIM		 Nano-SIM + Nano-SIM
  Water-repellent coating
Display
Type Super AMOLED, 420 nits (peak) IPS LCD, 450 nits (typ)
Size 6.4 inches, 100.5 cm2 (~84.2% screen-to-body ratio) 6.53 inches, 104.7 cm2 (~83.5% screen-to-body ratio)
Resolution 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~395 ppi density)
Protection Corning Gorilla Glass 3 Corning Gorilla Glass 5
Platform
OS Android 10, upgradable to Android 11, One UI 3.1 Core Android 10, upgradable to Android 11, MIUI 12.5 E
Chipset Exynos 9611 (10 nm) Mediatek MT6769Z Helio G85 (12 nm)
CPU Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU Mali-G72 MP3 Mali-G52 MC2
Memory
Card slot microSDXC (dedicated slot) microSDXC (dedicated slot)
Internal 64GB 4GB RAM, 128GB 6GB RAM 64GB 3GB RAM, 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM
 UFS 2.1
Main Camera
Modules 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm
5 MP, f/2.2, (depth)		 48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.2, 118˚ (ultrawide), 1/4.0", 1.12µm
2 MP, f/2.4, (macro), AF
2 MP, f/2.4, (depth)
Features LED flash, panorama, HDR LED flash, HDR, panorama
Video 4K@30fps, 1080p@30fps, 720p@240fps, gyro-EIS 1080p@30fps
Selfie Camera
Modules 20 MP, f/2.2, 26mm (wide) 13 MP, f/2.3, 29mm (standard), 1/3.1", 1.12µm
Features HDR HDR, panorama
Video 1080p@30fps 1080p@30fps
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Sound
Loudspeaker Yes Yes
3.5mm jack Yes Yes
Comms
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE
Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS, GALILEO, BDS
NFC Yes (market/region dependent) Yes (market/region dependent)
M2003J15SG (Yes); M2003J15SS (No)
Infrared port No Yes
Radio FM radio, RDS, recording FM radio, built-in antenna
USB USB Type-C 2.0 USB Type-C 2.0
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Battery
Type Li-Po 6000 mAh Li-Po 5020 mAh
Charging 15W wired 18W wired
9W reverse wired
Misc
Colors Midnight Blue, Raven Black Forest Green, Midnight Grey, Polar White
SAR 0.47 W/kg (head)     0.84 W/kg (head)     0.90 W/kg (body)    
SAR EU 0.80 W/kg (head)     1.14 W/kg (body)    
Models SM-M215F, SM-M215F/DS, SM-M215F/DSN M2003J15SC, M2003J15SG, M2003J15SS
Price About 190 EUR $ 85.50 / £ 105.30 / € 84.99 / ₹ 14,999
Tests
Performance AnTuTu: 200414 (v8)
GeekBench: 1292 (v5.1)
Display 1242:1 contrast ratio, 370 nits max brightness (measured)
Loudspeaker -30.1 LUFS (Below average)
Battery (old) Endurance rating 125h

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