Samsung Galaxy M21 6GB/128GB

Xiaomi Redmi Note 11 6GB+128GB

os

Android 10, One UI 2

Android 11, MIUI 13

RAM

6 GB

6 GB

ROM

128 GB

128 GB

expandable

512 GB

512 GB

CPU

Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)

Octa-core (4x2.4 GHz Kryo 265 Gold & 4x1.9 GHz Kryo 265 Silver)

GPU

Mali-G72 MP3

Adreno 610

SoC

Exynos 9611 (10nm)

Qualcomm SM6225 Snapdragon 680 4G (6 nm)

number of cores

8core

8core

features

LED flash, panorama, HDR

LED flash, HDR, panorama

primary

Triple:
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8m, PDAF
8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12m
5 MP, f/2.2, (depth)

Quad:
50 MP, f/1.8, 26mm (wide), 1/2.76", 0.64m, PDAF
8 MP, f/2.2, 118 (ultrawide), 1/4", 1.12m
2 MP, f/2.4, (macro)
2 MP, f/2.4, (depth)

secondary

20 MP, f/2.0, 26mm (wide)

13 MP, f/2.4, (wide), 1/3.1", 1.12m

video

4K@30fps, 1080p@30fps, gyro-EIS

1080p@30fps

Charging

Fast charging 15W

Fast charging 33W, Quick Charge 3+

capacity

6000mAh

5000mAh

type

Li-Polymer (non-removable)

Li-Polymer (non-removable)

build

Glass front (Gorilla Glass 3), plastic back, plastic frame

dimension

159 x 75.1 x 8.9 mm

159.9 x 73.9 x 8.1 mm

display

Super AMOLED capacitive touchscreen, 16M colors, 100.5 cm2 (~84.2% screen-to-body ratio)

AMOLED, 90Hz, 700 nits, 1000 nits (peak)

protection

Corning Gorilla Glass 3

resolution

1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)

1080 x 2400 pixels, 20:9 ratio (~409 ppi density)

screen

6.4"

6.43"

weight

188 gm

179 gm

GPS

Yes, with A-GPS, GLONASS, BDS

Yes, with A-GPS, GLONASS, BDS, GALILEO

NFC

Yes (market/region dependent)

USB

2.0, Type-C 1.0 reversible connector

USB Type-C 2.0, USB On-The-Go

bluetooth

5.0, A2DP, LE

5.0, A2DP, LE

internet

2G/3G/4G

4G/LTE

wifi

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

radio

FM Radio

FM Radio

sensors

Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass

Fingerprint (side-mounted), accelerometer, gyro, compass