TCL 20S vs Xiaomi Redmi K30

Network
2G network

GSM 850, 900, 1800, 1900

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

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

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

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 29, 38, 40, 41, 66

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

42.2 Mbps

42 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE-A

LTE-A
GPRS

Yes

Yes
EDGE

Yes

Yes

Display
Display type

IPS LCD

IPS LCD capacitive touchscreen
Physical size

6.67 inches

6.67 inches
Resolution

1080 x 2400 pixels

1080 x 2400 pixels
Pixel density

395 ppi

395 ppi
Display colors

16777216

16777216
Protection

Scratch resistant, 2.5D curved glass screen

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

-

Yes
Display features

Eye comfort mode

HDR10, 120Hz sampling rate

Hardware
CPU

Octa-core

Octa-core
CPU

Quad-core 2.0 GHz Kryo 260 Gold

Dual-core 2.2 GHz Kryo 470 Gold
CPU(second)

quad-core 1.8 GHz Kryo 260 Silver

Hexa-core 1.8 GHz Kryo 470 Silver
Chipset

Qualcomm SM6125 Snapdragon 665

Qualcomm SDM730 Snapdragon 730G
GPU

Adreno 610

Adreno 618
Memory RAM

4, 6 GB

6, 8 GB
Internal storage

128, 256 GB

64, 128, 256 GB
Memory card

microSD, microSDHC, microSDXC

microSD, microSDHC, microSDXC
Memory card max

1 TB

256 GB
Storage

-

UFS 2.1

Main camera
Camera type

Quad

Quad
Main camera

(wide) , 64 MP, f/1.8 , 26 mm, 1/2.0" , 0.7 µm

64 MP, f/1.9 , 26 mm, 1/1.7" , 0.8 µm
(ultrawide) , 8 MP, f/2.2 , 13 mm, 1/4.0" , 1.12 µm

8 MP, f/2.2 , 13 mm, 1/4" , 1.12 µm
(macro) , 2 MP, f/2.4

2 MP, f/2.4 , 1/5" , 1.75 µm
(depth) , 2 MP, f/2.4

2 MP, f/2.4 , 1/5" , 1.75 µm
Primary camera resolution

9280 x 6920 pixels

9248 x 6944 pixels
Primary camera video

4K@30fps, 1080p@30/120fps

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

LED flash

dual LED flash
Camera features

Autofocus, continuous shooting, digital zoom, 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, phase detection autofocus

Selfie camera
Selfie camera type

Single

Dual
Selfie camera

(wide) , 16 MP, f/2.2 , 28 mm, 1/3.06" , 1.0 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

4608 x 3456 pixels

5963 x 3354 pixels
Selfie camera video

1080p@30fps

1080p@30fps

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
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
Wi-Fi display

-

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 2.0

Type-C reversible connector
USB On-The-Go

Yes

Yes
Bluetooth

v5.0

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

Yes

-
Infrared

-

Yes
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

-

Yes
Beidou

-

Yes

Features
Sensors

Accelerometer, compass, fingerprint, proximity

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