Helio S1

Xiaomi Redmi 9

os

Android L OS 5.1

Android 10, MIUI 12

RAM

2 GB

4 GB

ROM

16 GB

64 GB

expandable

32 GB

microSDXC (dedicated slot) GB

CPU

Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)

GPU

Mali-T720 MP4

Mali-G52 MC2

SoC

Mediatek Helio G80 (12 nm)

number of cores

8core

8core

speed

1.3 GHz

featurues

HDR

primary

13 MP AF

Quad:
13 MP, f/2.2, 28mm (wide), 1/3.1", 1.12m, PDAF
8 MP, f/2.2, 118 (ultrawide), 1/4.0", 1.12m
5 MP, f/2.4, (macro)
2 MP, f/2.4, (depth)

secondary

8 MP AF

8 MP, f/2.0, 27mm (wide)

video

1080p@30fps

Stand By

270 Hours

Talk Time

7 Hours

capacity

2400mAh

5020mAh

charging

Fast charging 18W

type

Li-po

Li-Polymer (non-removable)

Display

AMOLED 720x1280 pixels (~294 ppi pixel density)

IPS LCD capacitive touchscreen, 16M colors

Weight

131.5 gm

198 gm

build

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

color

Carbon Gray, Ocean Green, Blue

dimension

163.3 x 77 x 9.1 mm

resolution

1080 x 2340 pixels, 19.5:9 ratio (~395 ppi density)

screen

5"

6.53"

USB

microUSB v2.0, USB Modem, USB OTG

2.0, Type-C 1.0 reversible connector, USB On-The-Go

bluetooth

Yes

5.0, A2DP, LE

internet

GSM / HSPA / LTE

wifi

802.11 b/g/n

Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot

radio

Wireless FM radio (no wired headphones required)

sensors

G-Sensor, Proximity Sensor, Light Sensor, Accelerometer Sensor, Magnetic Sensor, Gyroscope Sensor, GPS, AGPS

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