Xiaomi Redmi K30S vs vivo X90

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800

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

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

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

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

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41
5G network

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

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

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE-A, Cat20

LTE-A
5G speed

2 Gbps download

-
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

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

Glass front, glass back or eco leather back
SIM

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

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

165.1 mm

164.1 mm
Width

76.4 mm

74.4 mm
Thickness

9.3 mm

8.5 mm
Weight

216 g

196/200 g
Waterproof

-

IP64
Dust proof

-

IP64
Colors

Black, Silver

Black, Blue, Red

Display
Display type

IPS LCD

AMOLED
Physical size

6.67 inches

6.78 inches
Resolution

1080 x 2400 pixels

1260 x 2800 pixels
Pixel density

395 ppi

453 ppi
Display colors

16777216

1073741824
Protection

Scratch resistant, Corning Gorilla Glass 5

Scratch resistant, 3D curved glass screen
Display features

144Hz, HDR10, 500 nits (typ), 650 nits (peak), TrueColor DotDisplay, Sunlight display 3.0

120Hz, HDR10+

Main camera
Camera type

Triple

Triple
Main camera

(wide) , 64 MP, f/1.9 , 26 mm, 1/1.73" , 0.8 µm

(wide) , 50 MP, f/1.8 , 1/1.49" , 1.0 µm, 10x digital zoom
(ultrawide) , 13 MP, f/2.4 , 123˚ , 1.12 µm

(telephoto) , 12 MP, f/2.0 , 1.22 µm, 50 mm, 1/2.93" , 2x optical zoom
(macro) , 5 MP, f/2.4

(ultrawide) , 12 MP, f/2.0 , 116˚ , 16 mm, 1/2.93" , 1.22 µm
Primary camera resolution

-

8190 x 6120 pixels
Primary camera video

8K@24/30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps; gyro-EIS

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

-

Zeiss optics
Primary camera flash

LED flash

dual-LED dual-tone flash
Camera features

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

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, phase detection autofocus, laser autofocus

Selfie camera
Selfie camera type

Single

Single
Selfie camera

(wide) , 20 MP, f/2.2 , 26 mm, 1/3.4" , 0.8 µm

(wide) , 32 MP, f/2.5 , 24 mm, 1/2.8" , 0.8 µm
Selfie camera resolution

-

6528 x 4896 pixels
Selfie camera features

Face unlock, HDR

Face unlock
Selfie camera video

1080p@30fps, 720p@120fps

4K@30fps, 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, 802.11ax
WLAN WiFi Hotspot

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

v5.1

v5.3
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

-

aptX HD
Infrared

Yes

Yes
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

Yes

Yes
NavIC

Yes

Yes