Asus Zenfone 9 vs Xiaomi Redmi K30 5G

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100

HSDPA 850, 900, 1900, 2100
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42 - A version; 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42 - B version; 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 30, 34, 38, 39, 40, 41, 42, 66, 71 - C version

LTE frequency band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
5G network

5G band 1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 77, 78 - A version; 1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 41, 77, 78 - B version; 1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 71, 77, 78 - C version

5G band 41(2500), 78(3500); Sub6
HSDPA speed

42.2 Mbps

42 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE-A (5CA), Cat20, 2000 Mbps download, 211 Mbps upload

LTE-A
5G speed

4.5 Gbps download, 0.9 Gbps upload

2+ Gbps download
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front (Gorilla Glass Victus), polymer back, aluminum frame

Aluminium alloy, glass
SIM

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

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

146.5 mm

165.3 mm
Width

68.1 mm

76.6 mm
Thickness

9.1 mm

8.8 mm
Weight

169 g

208 g
Waterproof

IP68 (1.5m and 30 mins)

-
Dust proof

IP68

-
Colors

Black, Blue, Red, Silver

Blue, Purple, Red, White

Display
Display type

Super AMOLED

IPS LCD capacitive touchscreen
Physical size

5.9 inches

6.67 inches
Resolution

1080 x 2400 pixels

1080 x 2400 pixels
Pixel density

445 ppi

395 ppi
Display colors

16777216

16777216
Protection

Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass Victus

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

-

Yes
Display features

Always-on display, 120Hz, HDR10+, 1100 nits (peak)

HDR10, 120Hz sampling rate

Hardware
CPU

Octa-core

Octa-core
CPU

Single-core 3.19 GHz Cortex-X2

Single-core 2.4 GHz Kryo 475 Prime
CPU(second)

Triple-core 2.75 GHz Cortex-A710

Single-core 2.2 GHz Kryo 475 Gold
CPU(third)

Quad-core 1.8 GHz Cortex-A510

Hexa-core 1.8 GHz Kryo 475 Silver
Chipset

Qualcomm SM8475 Snapdragon 8+ Gen 1

Qualcomm SDM765 Snapdragon 765G
GPU

Adreno 730

Adreno 620
Memory RAM

8, 16 GB

6, 8 GB
Internal storage

128, 256 GB

64, 128, 256 GB
Memory card

No

microSD, microSDHC, microSDXC
Memory card max

-

256 GB
Storage

UFS 3.1

UFS 2.1

Main camera
Camera type

Dual

Quad
Main camera

(wide) , 50 MP, f/1.9 , 84˚ , 23.8 mm, 1/1.56" , 1.0 µm

64 MP, f/1.9 , 26 mm, 1/1.7" , 0.8 µm
(ultrawide) , 12 MP, f/2.2 , 113˚ , 14.4 mm, 1/2.93" , 1.4 µm

8 MP, f/2.2 , 13 mm, 1/4" , 1.12 µm
2 MP, f/2.4 , 1/5" , 1.75 µm
2 MP, f/2.4 , 1/5" , 1.75 µm
Primary camera resolution

8190 x 6120 pixels

9248 x 6944 pixels
Primary camera video

8K@24fps, 4K@30/60/120fps, 1080p@30/60/240fps, 720p@480fps; gyro-EIS, HDR

2160p@30fps, 1080p@30/120fps, 720p@960fps
Primary camera flash

LED flash

dual LED flash
Camera features

Autofocus, continuous shooting, digital zoom, optical 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, laser autofocus, RAW

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, phase detection autofocus

Selfie camera
Selfie camera type

Single

Dual
Selfie camera

(standard) , 12 MP, f/2.5 , 27.5 mm, 1/2.93" , 1.22 µm

20 MP, f/2.2 , 27 mm, 1/3.4" , 0.8 µm
2 MP, f/2.4 , 1/5" , 1.75 µm
Selfie camera resolution

4032 x 3024 pixels

5963 x 3354 pixels
Selfie camera features

Dual-pixel phase detection autofocus, face unlock, HDR

-
Selfie camera video

4K@30fps, 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 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
Wi-Fi display

-

Yes
WLAN WiFi Dual Band

Yes

Yes
WLAN DLNA

Yes

-
USB

Type-C 3.0

Type-C reversible connector
USB On-The-Go

Yes

Yes
Bluetooth

v5.2

v5.1
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX HD, aptX Adaptive

-
Infrared

-

Yes
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
Beidou

-

Yes
BDS

Yes

-
QZSS

Yes

Yes
NavIC

Yes

-

Features
Sensors

Accelerometer, compass, fingerprint, gyroscope, proximity

Accelerometer, barometer, compass, geomagnetic, gravity, gyroscope, pedometer, proximity, light, side-mounted fingerprint sensor