Xiaomi 12S Ultra vs Xiaomi Redmi 8A Dual

Xiaomi 12S Ultra

Xiaomi Redmi 8A Dual

Network
2G network

GSM 850, 900, 1800, 1900;CDMA 800

GSM 850, 900, 1800, 1900
3G network

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1xEV-DO

HSDPA 850, 900, 1900, 2100
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26, 34, 38, 39, 40, 41, 42

LTE frequency band 1(2100), 3(1800), 5(850), 8(900), 40(2300), 41(2500)
5G network

5G band 1, 3, 5, 8, 28, 38, 40, 41, 77, 78, 79 SA/NSA

-
HSDPA speed

42.2 Mbps

-
HSUPA speed

5.76 Mbps

-
LTE speed

LTE-A

-
GPRS

Class 33

Yes
EDGE

Class 33

Yes

Design
Build

Glass front (Gorilla Glass Victus), eco leather back, aluminum frame

Plastic
SIM

Dual SIM (Nano-SIM, dual stand-by)

Dual SIM (Nano-SIM, dual stand-by)
Height

163.2 mm

156.5 mm
Width

75 mm

75.4 mm
Thickness

9.1 mm

9.4 mm
Weight

225 g

188 g
Splash resistant

-

Yes
Colors

Black, Green

Black, Blue, Red

Display
Display type

LTPO2 AMOLED

IPS LCD capacitive touchscreen
Physical size

6.73 inches

6.22 inches
Resolution

1440 x 3200 pixels

720 x 1520 pixels
Pixel density

522 ppi

270 ppi
Display colors

1073741824

16777216
Protection

Scratch resistant, Corning Gorilla Glass Victus

Corning Gorilla Glass 5
Multitouch

-

Yes
Display features

120Hz, Dolby Vision, HDR10+, 1000 nits (HBM), 1500 nits (peak)

400 nits typ. brightness

Main camera
Camera type

Quad

Dual
Main camera

(wide) , 50 MP, f/1.9 , 23 mm, 1.0" , 1.6 µm

13 MP, f/2.2 , 1/3.1" , 1.12 µm
(periscope telephoto) , 48 MP, f/4.1 , 120 mm, 1/2.0" , 0.8 µm

2 MP, f/2.4
128˚ , (ultrawide) , 48 MP, f/2.2 , 13 mm, 1/2.0" , 0.8 µm
Primary camera video

8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, 720p@3840fps, gyro-EIS, Dolby Vision HDR 10-bit rec. (4K, 1080p)

1080p@30fps
Primary camera optics

Leica lens

-
Primary camera flash

dual-LED flash

LED flash
Camera features

Autofocus, continuous autofocus, continuous shooting, digital zoom, optical zoom, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, face unlock, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocus, super night mode 2.0, HDR10 video recording

HDR, Panorama

Selfie camera
Selfie camera type

Single

-
Selfie camera

(wide) , 32 MP, f/2.4 , 80˚ , 25 mm, 1/3" , 0.7 µm

8 MP, f/2.0 , 1/4" , 1.12 µm
Selfie camera features

Face unlock, HDR, panorama

-
Selfie camera video

1080p@30/60fps

1080p@30fps

Connectivity
WLAN

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax

Wi-Fi 802.11b, 802.11g, 802.11n
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

Yes

-
WLAN DLNA

Yes

-
USB

Type-C 2.0

Type-C reversible connector
USB On-The-Go

Yes

Yes
Bluetooth

v5.2

v4.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX HD, aptX Adaptive

-
Infrared

Yes

-
NFC

Yes

-
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

-
Beidou

-

Yes
BDS

Yes

-
QZSS

Yes

-
NavIC

Yes

-

Features
Sensors

Accelerometer, barometer, color spectrum, compass, fingerprint, gyroscope, virtual proximity sensing

Accelerometer, compass, proximity
Power bank function

-

Yes