Oppo A55 vs Xiaomi 12S

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, 18, 19, 26, 34, 38, 39, 40, 41, 42
5G network

-

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

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
EV-DO speed

-

EV-DO Rev.A 2.4 Mbps download, 0.15 Mbps upload
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), glass back or eco leather back, aluminum frame
SIM

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

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

163.6 mm

152.7 mm
Width

75.7 mm

69.9 mm
Thickness

8.4 mm

8.2/8.7 mm
Weight

193 g

179/182 g
Colors

Black, Blue, Green

Gray, Green, Purple, White

Display
Display type

IPS LCD

AMOLED
Physical size

6.51 inches

6.28 inches
Resolution

720 x 1600 pixels

1080 x 2400 pixels
Pixel density

270 ppi

419 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+, 1100 nits (peak)

Main camera
Camera type

Triple

Triple
Main camera

(wide) , 50 MP, f/1.8 , 77˚ , 26 mm

(wide) , 50 MP, f/1.9 , 24 mm, 1/1.28" , 1.22 µm
(macro) , 2 MP, f/2.4

(ultrawide) , 13 MP, f/2.4 , 123˚ , 15 mm, 1/3.06" , 1.22 µm
(depth) , 2 MP, f/2.4

(telephoto macro) , 5 MP, f/2.4 , 50 mm
Primary camera resolution

8160 x 6144 pixels

8190 x 6144 pixels
Primary camera video

1080p@30fps

8K@24fps, 4K@30/60fps, 1080p@30/60fps, 720p@1920fps, gyro-EIS
Primary camera optics

-

Leica lens
Primary camera flash

LED flash

dual-LED dual-tone 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, macro-mode, phase detection autofocus, super night mode 2.0, cyberfocus

Selfie camera
Selfie camera type

Single

Single
Selfie camera

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

(wide) , 32 MP, f/2.5 , 26 mm, 80˚ , 0.7 µm
Selfie camera resolution

4608 x 3456 pixels

-
Selfie camera features

Face unlock, face detection, HDR

Face unlock, HDR
Selfie camera video

1080p@30fps

1080p@30/60fps, 720p@120fps, HDR

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
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

-
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