Screen size
C28Winner: 2.0"+3%
GT32.0"
Quick verdict
GT3 leads the measured specs 4-3.
Measured wins
C28
3
spec wins
Ties
4
equal specs
GT3
4
spec wins
Overall winner
Screen size
Technology
C28
No cellular connectivity
GT3
No cellular connectivity
2G bands
C28
N/A
GT3
N/A
3G bands
C28
N/A
GT3
N/A
4G bands
C28
N/A
GT3
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
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
N/A
Speed
C28
No
GT3
No
GPRS
C28
No
GT3
No
EDGE
C28
No
GT3
No
Announced
C28
2024, August
GT3
2025, March
Status
C28
Available. Released 2024, August
GT3
Available. Released 2025, March
Dimensions
C28
58.3 x 46.1 x 13.3 mm (2.30 x 1.81 x 0.52 in)
GT3
59.3 x 48.2 x 13.4 mm (2.33 x 1.90 x 0.53 in)
Weight
C28
44.5 g (1.59 oz)
GT3
57 g (2.01 oz)
Build
C28
Zinc alloy frame
GT3
-
SIM
C28
No
GT3
No
Other
C28
1 ATM waterproof
GT3
Waterproof (5ATM)
Type
C28
TFT LCD
GT3
AMOLED
Size
C28
2.02 inches
GT3
1.96 inches
Resolution
C28
320 x 390 pixels (~250 ppi density)
GT3
410 x 502 pixels (~331 ppi density)
OS
C28
Proprietary OS
GT3
Proprietary OS
Card slot
C28
No
GT3
No
Internal
C28
128Mb
GT3
32MB
Other
C28
No
GT3
No
Loudspeaker
C28
Yes
GT3
Yes
3.5mm jack
C28
No
GT3
No
WLAN
C28
No
GT3
No
Bluetooth
C28
Yes
GT3
5.3, A2DP, LE
Positioning
C28
No
GT3
GPS (L1+L5)
NFC
C28
No
GT3
No
Radio
C28
No
GT3
No
USB
C28
No
GT3
No
Sensors
C28
Accelerometer, heart rate, SpO2, blood pressure
GT3
Accelerometer, gyro, barometer, compass, heart rate, SpO2
Languages
C28
-
GT3
Type
C28
410 mAh
GT3
530 mAh
Colors
C28
Black, Green
GT3
Black, Gray