Screen size
A40Winner: 6.9"+8.4%
X20 Pro6.3"
Quick verdict
A40 and X20 Pro are close on the measured specs.
Measured wins
A40
8
spec wins
Ties
2
equal specs
X20 Pro
8
spec wins
Screen size
Technology
A40
GSM / HSPA / LTE
X20 Pro
GSM / HSPA / LTE
2G bands
A40
GSM 850 / 900 / 1800 / 1900
X20 Pro
GSM 850 / 900 / 1800 / 1900
3G bands
A40
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
X20 Pro
HSDPA 900 / 2100
4G bands
A40
1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 38, 39, 40, 41, 66
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
3.5mm jack
SD card
equal specsStereo speakers
X20 Pro
1, 3, 7, 8, 19, 20
Speed
A40
HSPA, LTE
X20 Pro
HSPA, LTE
Announced
A40
2025, July
X20 Pro
2020. Released 2020
Status
A40
Available. Released 2025, July
X20 Pro
Discontinued
Dimensions
A40
172.3 x 78.1 x 8.8 mm (6.78 x 3.07 x 0.35 in)
X20 Pro
157.1 x 74.6 x 8.1 mm (6.19 x 2.94 x 0.32 in)
Weight
A40
-
X20 Pro
240 g (8.47 oz)
SIM
A40
Nano-SIM + Nano-SIM
X20 Pro
Nano-SIM + Nano-SIM
Build
A40
-
X20 Pro
Glass front, plastic frame, glass back
Type
A40
IPS LCD, 120Hz
X20 Pro
IPS LCD
Size
A40
6.88 inches, 112.4 cm2 (~83.5% screen-to-body ratio)
X20 Pro
6.3 inches, 97.4 cm2 (~83.1% screen-to-body ratio)
Resolution
A40
720 x 1640 pixels (~260 ppi density)
X20 Pro
1080 x 2340 pixels, 19.5:9 ratio (~409 ppi density)
Protection
A40
Mohs level 6
X20 Pro
-
OS
A40
Android 15
X20 Pro
Android 9.0 (Pie)
Chipset
A40
Unisoc T606 (12 nm)
X20 Pro
Mediatek MT6771 Helio P60 (12 nm)
CPU
A40
Octa-core (2x1.6 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
X20 Pro
Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
GPU
A40
Mali-G57 MP1
X20 Pro
Mali-G72 MP3
Card slot
A40
microSDXC
X20 Pro
microSDXC (uses shared SIM slot)
Internal
A40
64GB 4GB RAM, 256GB 8GB RAM
X20 Pro
128GB 6GB RAM
Dual
A40
48 MP, (wide), PDAF 2 MP, (ultrawide)
X20 Pro
-
Features
A40
LED flash
X20 Pro
LED flash
Video
A40
Yes
X20 Pro
Yes
Triple
A40
-
X20 Pro
12 MP, (wide), 1/2.9", AF 8 MP, 125˚ (ultrawide) 20 MP, (depth), 1/2.78"
Single
A40
16 MP
X20 Pro
13 MP, (wide), 1/3.06"
Video
A40
Yes
X20 Pro
Yes
Loudspeaker
A40
Yes, with stereo speakers
X20 Pro
Yes
3.5mm jack
A40
No
X20 Pro
Unspecified
WLAN
A40
Wi-Fi 802.11 a/b/g/n/ac, dual-band
X20 Pro
Wi-Fi 802.11 a/b/g/n
Bluetooth
A40
5.0, A2DP, LE
X20 Pro
4.2, A2DP
Positioning
A40
GPS, GALILEO, GLONASS, BDS
X20 Pro
GPS
NFC
A40
Yes
X20 Pro
No
Radio
A40
Unspecified
X20 Pro
Unspecified
USB
A40
USB Type-C, OTG
X20 Pro
USB Type-C, OTG
Sensors
A40
Accelerometer, proximity
X20 Pro
Accelerometer, gyro, proximity, compass
Type
A40
5100 mAh
X20 Pro
4000 mAh
Colors
A40
Black, Purple, Titan Grey
X20 Pro
Blue, Gold, Black