Phone Comparison - Xiaomi Redmi Note 5 vs Samsung Galaxy A51 vs Samsung Galaxy M21

Price Comparison (India) - -

general General Info

Manufacturer Xiaomi Samsung Samsung
Announced February 2018 December 2019 2020, March 18
Status Available - February 2018 Coming Soon - December 12, 2019 Coming soon. Exp. release 2020, March 23
Price Rs. 9,999 ($155.00) [Similarly Priced] Rs. 23,999 ($0.00) [Similarly Priced] Rs. 12,999 ($0.00) [Similarly Priced]
Colors Gold, Silver, Gray Prism Crush White, Black, Pink, Blue Midnight Blue, Raven Black
Form Factor Candybar Candybar Candybar
Dimension 158.5 x 75.45 x 8.05 mm
(6.24 x 2.97 x 0.32 in)
158.4 x 73.7 x 7.9 mm
(6.24 x 2.9 x 0.31 in)
159 x 75.1 x 8.9 mm
(6.26 x 2.96 x 0.35 in)
Weight 179.5 g (6.31.0.18 oz) 172 g (6.07 oz) 188 g (6.63 oz)
SIM Type Dual SIM Hybrid (Nano SIM + Micro SIM, or Micro SIM + microSD Card) Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) Dual SIM (Nano-SIM, dual stand-by)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 2100 HSDPA 850 / 900 / 1900 / 2100
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
HSDPA 850 / 900 / 1900 / 2100
4G Network LTE LTE (unspecified) LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300), 41(2500)
Messaging SMS, MMS, Push Mail, EMail
Build Features - Fingerprint Sensor - Fingerprint Sensor(In-display)
- Fingerprint Sensor
Notification LED Yes - -

hardware Hardware and OS

OS Android OS, v7.1 (Nougat) Android 9.0 (Pie) Android 10.0
User Interface MIUI 9 One UI One UI 2.0
Processor Octa-core 2.2 GHz Kryo 260, Qualcomm MSM8953 Snapdragon 625 Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm) Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm)
GPU Adreno 506 Mali-G72 MP3 Mali-G72 MP3
RAM 3/4 GB 8 GB 6 GB
Internal Memory 32/64 GB 128 GB 128 GB
External Memory microSD, up to 128 GB microSD, up to 512 GB (dedicated slot) microSDXC (dedicated slot)

display Display

Type IPS LCD Capacitive Touchscreen, Gorilla Glass Protection Full HD+ Infinity-O Super AMOLED Capacitive Touchscreen Super AMOLED Capacitive Touchscreen
Corning Gorilla Glass 3
420 nits max brightness (advertised)
Colors 16M colors 16M colors 16M colors
Size 5.99 inches 6.5 inches 6.4 inches
Resolution 1080 x 2160 pixels (403 ppi) 1080 x 2340 pixels (396 ppi) 1080 x 2340 pixels (403 ppi)
Screen-to-Body Ratio 77.49% 89.06% 84.07%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio FM Radio FM radio FM radio, RDS, recording
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera 12 MP 48 MP + 12 MP + 5 MP + 5 MP 48 MP + 8 MP + 5 MP
Flash Dual-LED (Dual Tone) LED Flash LED Flash
Features Phase Detection Autofocus, f/2.0 aperture, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR 48 MP, f/1.8, (wide), 1/2", 0.8µm, PDAF
12 MP, f/2.2, 13mm (ultrawide)
5 MP, f/2.2, depth sensor
5 MP, f/2.4, macro camera
Panorama, HDR
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)
Panorama, HDR
Video 2160p@30fps, 1080p@30fps, 720p@120fps 2160p@30fps, 1080p@30fps 2160p@30fps, 1080p@30fps, gyro-EIS
Front Camera 5 MP, f/2.0 [Similar] 32 MP, f/2.0, 25mm (wide)
HDR
1080p@30fps [Similar]
20 MP, f/2.0, (wide), 1/2.8", 1.0μm
HDR
1080p@30fps [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps, VoLTE HSPA, LTE-A HSPA, LTE-A
Bluetooth v4.2, A2DP, LE 5.0, A2DP, LE 5.0, A2DP, LE
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
USB microUSB 2.0 2.0, Type-C 1.0 reversible connector, USB On-The-Go 2.0, Type-C 1.0 reversible connector
GPS Yes, with A-GPS Yes, with A-GPS, GLONASS, GALILEO, BDS Yes, with A-GPS, GLONASS, BDS
Browser HTML5 Yes Yes

memory User Memory

Internal 32/64 GB, 3/4 GB RAM 128 GB, 8 GB RAM or 128 GB, 6 GB RAM or 64 GB, 4 GB RAM 128 GB, 6 GB RAM or 64 GB, 4 GB RAM (UFS 2.1)
Expandable Storage microSD, up to 128 GB microSD, up to 512 GB (dedicated slot) microSDXC (dedicated slot)
USB OTG Supported Supported Supported

Apps Sensors

Fingerprint fingerprint supported fingerprint supported fingerprint supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
Magnetic-Field Sensor (Compass) magnetic field sensor present magnetic field sensor present magnetic field sensor present
Gyroscope Sensor gyroscope sensor present gyroscope sensor present gyroscope sensor present
NFC NFC not supported NFC not supported NFC not supported

battery Battery

Type Non-removable Li-Ion Battery Non-removable Li-Po Battery
Fast battery charging 15W
Non-removable Li-Po Battery
Fast battery charging 15W
Capacity 4000 mAh 4000 mAh 6000 mAh
Stand by - - -
Talk Time - - -