Screen size
A40Winner: 6.9"+8.4%
X206.3"
Quick verdict
A40 leads the measured specs 8-6.
Measured wins
A40
8
spec wins
Overall winner
Ties
4
equal specs
X20
6
spec wins
Screen size
Technology
A40
GSM / HSPA / LTE
X20
GSM / HSPA / LTE
2G bands
A40
GSM 850 / 900 / 1800 / 1900
X20
GSM 850 / 900 / 1800 / 1900
3G bands
A40
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
X20
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
equal specsStorage
equal specsMain 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
1, 3, 7, 8, 19, 20
Speed
A40
HSPA, LTE
X20
HSPA, LTE
Announced
A40
2025, July
X20
2020. Released 2020
Status
A40
Available. Released 2025, July
X20
Discontinued
Dimensions
A40
172.3 x 78.1 x 8.8 mm (6.78 x 3.07 x 0.35 in)
X20
157.1 x 74.6 x 8.1 mm (6.19 x 2.94 x 0.32 in)
Weight
A40
-
X20
240 g (8.47 oz)
SIM
A40
Nano-SIM + Nano-SIM
X20
Nano-SIM + Nano-SIM
Build
A40
-
X20
Glass front, plastic frame, glass back
Type
A40
IPS LCD, 120Hz
X20
IPS LCD
Size
A40
6.88 inches, 112.4 cm2 (~83.5% screen-to-body ratio)
X20
6.3 inches, 97.4 cm2 (~83.1% screen-to-body ratio)
Resolution
A40
720 x 1640 pixels (~260 ppi density)
X20
1080 x 2340 pixels, 19.5:9 ratio (~409 ppi density)
Protection
A40
Mohs level 6
X20
-
OS
A40
Android 15
X20
Android 9.0 (Pie)
Chipset
A40
Unisoc T606 (12 nm)
X20
Mediatek MT6763 Helio P23 (16 nm)
CPU
A40
Octa-core (2x1.6 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
X20
Octa-core 2.5 GHz Cortex-A53
GPU
A40
Mali-G57 MP1
X20
Mali-G71 MP2
Card slot
A40
microSDXC
X20
microSDXC (uses shared SIM slot)
Internal
A40
64GB 4GB RAM, 256GB 8GB RAM
X20
64GB 4GB RAM
Dual
A40
48 MP, (wide), PDAF 2 MP, (ultrawide)
X20
-
Features
A40
LED flash
X20
LED flash
Video
A40
Yes
X20
Yes
Triple
A40
-
X20
12 MP, (wide), 1/2.9", AF 8 MP, 125˚ (ultrawide) 20 MP, (depth), 1/2.78"
Single
A40
16 MP
X20
13 MP, (wide), 1/3.06"
Video
A40
Yes
X20
Yes
Loudspeaker
A40
Yes, with stereo speakers
X20
Yes
3.5mm jack
A40
No
X20
Unspecified
WLAN
A40
Wi-Fi 802.11 a/b/g/n/ac, dual-band
X20
Wi-Fi 802.11 a/b/g/n
Bluetooth
A40
5.0, A2DP, LE
X20
4.2, A2DP
Positioning
A40
GPS, GALILEO, GLONASS, BDS
X20
GPS
NFC
A40
Yes
X20
No
Radio
A40
Unspecified
X20
Unspecified
USB
A40
USB Type-C, OTG
X20
USB Type-C, OTG
Sensors
A40
Accelerometer, proximity
X20
Accelerometer, gyro, proximity, compass
Type
A40
5100 mAh
X20
4000 mAh
Colors
A40
Black, Purple, Titan Grey
X20
Blue, Gold, Black