TCL 40 X vs Xiaomi 12T

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 850, 1700(AWS), 1900 - USA

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

LTE frequency band 2, 4, 5, 12, 13, 25, 26, 41, 66, 71 - USA

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 38, 40, 41
5G network

-

5G band 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66 SA/NSA
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE

LTE-A
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front, plastic frame, plastic back

Glass, aluminium alloy
SIM

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

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

-

163.1 mm
Width

-

75.9 mm
Thickness

-

8.6 mm
Weight

-

202 g
Colors

Black

Black, Blue, Silver

Display
Display type

IPS LCD

AMOLED
Physical size

6.56 inches

6.67 inches
Resolution

720 x 1612 pixels

1220 x 2712 pixels
Pixel density

269 ppi

446 ppi
Display colors

16777216

1073741824
Protection

-

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

-

120Hz, HDR10+

Main camera
Camera type

Triple

Triple
Main camera

(wide) , 50 MP

(wide) , 108 MP, f/1.7 , 24 mm, 1/1.67" , 0.64 µm
(macro) , 2 MP, f/2.4

(ultrawide) , 8 MP, f/2.2 , 1/4" , 1.12 µm
(depth) , 2 MP, f/2.4

(macro) , 2 MP, f/2.4 , 1/4" , 1.12 µm
Primary camera resolution

8190 x 6120 pixels

12000 x 9000 pixels
Primary camera video

1080p@30fps

4K@30fps, 1080p@30/60fps
Primary camera flash

LED flash

dual-LED dual-tone 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 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, night mode, ultra night video

Selfie camera
Selfie camera type

Single

Single
Selfie camera

(wide) , 8 MP, f/2.0 , 1/4" , 1.12 µm

(wide) , 20 MP, f/2.2 , 1/3.47" , 0.8 µm, 78˚
Selfie camera resolution

3264 x 2448 pixels

-
Selfie camera features

-

Face unlock, HDR, face detection, video HDR
Selfie camera video

1080p@30fps

1080p@30/60fps

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
WLAN WiFi Dual Band

-

Yes
USB

Type-C 2.0

Type-C 2.0
USB On-The-Go

-

Yes
Bluetooth

v5.1

v5.3
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Infrared

-

Yes
NFC

-

Yes (market dependent)
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

-

Yes
GALILEO

-

Yes
BDS

-

Yes
QZSS

-

Yes
NavIC

-

Yes