Oppo A55 vs Xiaomi 12S Ultra

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900;CDMA 800
3G network

HSDPA 850, 900, 2100

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1xEV-DO
4G network

LTE frequency band 1, 3, 5, 8, 38, 40, 41

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

-

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

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE, 391 Mbps download, 150 Mbps upload

LTE-A
GPRS

Yes

Class 33
EDGE

Yes

Class 33

Design
Build

Plastic

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

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

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

163.6 mm

163.2 mm
Width

75.7 mm

75 mm
Thickness

8.4 mm

9.1 mm
Weight

193 g

225 g
Colors

Black, Blue, Green

Black, Green

Display
Display type

IPS LCD

LTPO2 AMOLED
Physical size

6.51 inches

6.73 inches
Resolution

720 x 1600 pixels

1440 x 3200 pixels
Pixel density

270 ppi

522 ppi
Display colors

16777216

1073741824
Protection

Scratch resistant, 2.5D curved glass screen, AGC Dragontrail glass - NEG T2X-1

Scratch resistant, Corning Gorilla Glass Victus
Display features

480 nits (typ), 550 nits (peak)

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

Main camera
Camera type

Triple

Quad
Main camera

(wide) , 50 MP, f/1.8 , 77˚ , 26 mm

(wide) , 50 MP, f/1.9 , 23 mm, 1.0" , 1.6 µm
(macro) , 2 MP, f/2.4

(periscope telephoto) , 48 MP, f/4.1 , 120 mm, 1/2.0" , 0.8 µm
(depth) , 2 MP, f/2.4

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

8160 x 6144 pixels

-
Primary camera video

1080p@30fps

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

-

Leica lens
Primary camera flash

LED flash

dual-LED flash
Camera features

Autofocus, digital image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode, phase detection autofocus

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

Selfie camera
Selfie camera type

Single

Single
Selfie camera

(wide) , 16 MP, f/2.0 , 26 mm

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

4608 x 3456 pixels

-
Selfie camera features

Face unlock, face detection, HDR

Face unlock, HDR, panorama
Selfie camera video

1080p@30fps

1080p@30/60fps

Connectivity
WLAN

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac

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

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
WLAN DLNA

-

Yes
USB

Type-C 2.0

Type-C 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.0

v5.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX

aptX HD, aptX Adaptive
Infrared

-

Yes
NFC

No

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

Yes

Yes
NavIC

-

Yes

Features
Sensors

Accelerometer, compass, fingerprint, gyroscope, proximity

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