Screen size
G406.0"
G51SWinner: 6.4"+6.3%
Quick verdict
G51S leads the measured specs 5-2.
Measured wins
G40
2
spec wins
Ties
10
equal specs
G51S
5
spec wins
Overall winner
Screen size
Technology
G40
GSM / HSPA / LTE
G51S
GSM / HSPA / LTE
2G bands
G40
GSM 850 / 900 / 1800 / 1900
G51S
GSM 850 / 900 / 1800 / 1900
3G bands
G40
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
G51S
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
G40
2, 3, 4, 5, 7, 12, 17, 28, 66
Resolution
Refresh rate
Peak brightness
Pixel density
equal specsCPU speed
RAM
Storage
equal specsMain camera
equal specsFront camera
equal specsBattery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
G51S
1, 2, 3, 4, 5, 7, 12, 17, 28
Speed
G40
HSPA, LTE
G51S
HSPA, LTE
Announced
G40
2022, June. Released 2022, June
G51S
2022, January. Released 2022, January
Status
G40
Discontinued
G51S
Discontinued
Dimensions
G40
163.4 x 78.8 x 10.8 mm (6.43 x 3.10 x 0.43 in)
G51S
162.4 x 77.5 x 9 mm (6.39 x 3.05 x 0.35 in)
Weight
G40
203 g (7.16 oz)
G51S
185 g (6.53 oz)
SIM
G40
Nano-SIM + Nano-SIM
G51S
Type
G40
IPS LCD
G51S
IPS LCD
Size
G40
6.0 inches, 92.9 cm2 (~72.2% screen-to-body ratio)
G51S
6.4 inches, 100.5 cm2 (~79.9% screen-to-body ratio)
Resolution
G40
720 x 1440 pixels, 18:9 ratio (~268 ppi density)
G51S
720 x 1560 pixels, 19.5:9 ratio (~268 ppi density)
OS
G40
Android 11
G51S
Android 11 (Go edition)
CPU
G40
Quad-core 2.0 GHz Cortex-A75
G51S
Octa-core 1.6 GHz Cortex-A55
Card slot
G40
microSDXC
G51S
microSDXC
Internal
G40
32GB 3GB RAM
G51S
32GB 2GB RAM
Other
G40
eMMC 5.1
G51S
eMMC 5.1
Dual
G40
13 MP 0.3 MP
G51S
13 MP Auxiliary lens
Features
G40
LED flash, HDR, panorama
G51S
LED flash
Video
G40
1080p@30fps
G51S
1080p@30fps
Single
G40
8 MP
G51S
8 MP
Video
G40
1080p@30fps
G51S
720p@30fps
Loudspeaker
G40
Yes
G51S
Yes
3.5mm jack
G40
Yes
G51S
Yes
WLAN
G40
Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct
G51S
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
G40
4.2, A2DP, LE
G51S
4.2, A2DP, LE
Positioning
G40
GPS
G51S
GPS
NFC
G40
No
G51S
No
Radio
G40
FM radio
G51S
FM radio
USB
G40
microUSB 2.0
G51S
USB Type-C 2.0
Sensors
G40
Accelerometer
G51S
Fingerprint (rear-mounted), accelerometer, proximity
Type
G40
Li-Ion 3000 mAh, removable
G51S
Li-Po 4000 mAh
Colors
G40
Black, Blue, Green, Cyan, Teal, White
G51S
Bronze, Gradient Blue, Green, Red
Price
G40
About 100 EUR
G51S
About 80 EUR