Oppo A91 vs Xiaomi Redmi K30 Ultra

Oppo A91

Xiaomi Redmi K30 Ultra

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800 & TD-SCDMA

GSM 850, 900, 1800, 1900; CDMA 800 & TD-SCDMA
3G network

HSDPA 850, 1700(AWS), 1900, 2100

HSDPA 850, 900, 1900, 2100; CDMA2000 1xEV-DO
4G network

LTE frequency band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)

LTE frequency band 1, 3, 5, 7, 8, 34, 38, 39, 40, 41
5G network

-

5G band 1, 3, 41, 78, 79; SA/NSA
HSDPA speed

42.2 Mbps

42 Mbps
HSUPA speed

11.5 Mbps

5.76 Mbps
LTE speed

LTE-A

LTE-A
5G speed

-

5G
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Aluminium alloy, glass

Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
SIM

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

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

160.2 mm

163.3 mm
Width

73.3 mm

75.4 mm
Thickness

7.9 mm

9.1 mm
Weight

172 g

213 g
Colors

Dark blue, Blue, Red

Black, Green, White

Display
Display type

AMOLED capacitive touchscreen

AMOLED capacitive touchscreen
Physical size

6.4 inches

6.67 inches
Resolution

1080 x 2400 pixels

1080 x 2400 pixels
Pixel density

411 ppi

395 ppi
Display colors

16777216

16777216
Protection

Scratch resistant

2.5D curved glass screen, Scratch resistant, Corning Gorilla Glass 5
Multitouch

Yes

-
Display features

-

HDR10+, 120Hz sampling rate, 500 nits typ. brightness

Main camera
Camera type

Quad

Quad
Main camera

48 MP, f/1.8 , 26 mm, 1/2.0" , 0.8 µm

64 MP, f/1.9 , 26 mm, 1/1.72" , 0.8 µm
8 MP, f/2.2 , 13 mm, 1/4.0" , 1.12 µm

13 MP, f/2.4 , 1.12 µm
2 MP, f/2.4 , 1/5" , 1.75 µm

5 MP, f/2.2 , 50 mm
2 MP, f/2.4 , 1/5" , 1.75 µm

2 MP, f/2.4
Primary camera resolution

8000 x 6000 pixels

5184 x 3800 pixels
Primary camera video

2160p@30fps

4K@30fps, 1080p@30/60/120/240/960fps; gyro-EIS
Primary camera flash

LED flash

dual-LED dual-tone flash
Camera features

Autofocus, 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 shooting, digital zoom, digital image stabilization, optical 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, RAW, AI skyscaping

Selfie camera
Selfie camera type

-

Single
Selfie camera

16 MP, f/2 , 26 mm, 1/3.1" , 1.0 µm

20 MP, f/2.24 , 27 mm, 1/3.4" , 0.8 µm
Selfie camera resolution

4608 x 3456 pixels

5184 x 3800 pixels
Selfie camera video

1080p@30fps

1080p@30fps, 720p@120fps

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
Wi-Fi display

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 1.0 reversible connector

Type-C reversible connector
USB On-The-Go

Yes

Yes
Bluetooth

v5.0

v5.1
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

-

aptX HD
Infrared

-

Yes
NFC

-

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

-

Yes
Beidou

Yes

Yes
QZSS

-

Yes

Features
Sensors

Accelerometer, compass, fingerprint, gyroscope, proximity, light

Accelerometer, compass, fingerprint, gyroscope, proximity
Power bank function

-

Yes

Battery
Battery type

Li-Po

Li-Po
Battery capacity

4025 mAh

4500 mAh
Battery removable

Non-removable

Non-removable
Fast battery charging

VOOC Flash Charge 4.0 (50% in 30 min)

Qualcomm Quick Charge 4+(100% in 58 min)

Xiaomi Redmi K30 Ultra comparisons