UMIDIGI S2 Pro 4G Phablet Android 7.0
-6.0 inch Helio P25 Octa Core 2.6GHz 6GB RAM 128GB ROM 13.0MP + 5.0MP Dual Rear Cameras GPS Type-C
Main Features:
Display: 6.0 inch 2160 x 1080 pixels screen
CPU: Helio P25 Octa Core 2.6GHz
System: Android 7.0
Storage: 6GB RAM + 128GB ROM
Cameras: front 16.0MP + rear 13.0MP + 5.0MP with AF and flash light
Sensors: Accelerometer, Ambient Light Sensor, E-Compass, Gravity Sensor, Proximity Sensor
Features: GPS, A-GPS, Glonass
SIM Card: dual SIM dual standby, 1 Nano SIM card + 1 Nano SIM card or 1 Nano SIM card + 1 TF card
Networks:
GSM: 850/900/1800/1900MHz
WCDMA: 850/900/1900/2100MHz
FDD-LTE: 800/1800/2100/2600MHz
I'd personally rather purchase the Ulefone Power 3s for AUD$218 if I want to purchase a lesser known Chinadroid.
The specific advantage the S2 Pro has is the 3G 850hz over Power 3s
However Power 3s has an additional 4G band 900hz which could be handy for some user
Other than that the Heilo P25 (S2 Pro) over Heilo P23 (Power 3s) doesn't have that big difference specially when you considering the big price difference