In order to hard reset a Evolveo StrongPhone G4, you should perform the following steps.

Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Evolveo StrongPhone G4 device will be brought back to the default configuration of a brand new device.

1. Press and hold the Power button to turn off the phone. 

2. Press the Volume Up & Power buttons simultanously.

3. Release it when the EVOLVE logo pops up.
4. Select the wipe data/factory reset option. Navigate to it with Volume and select with Power button.

5. Press Power to confirm by selecting Yes.

6. Lastly, select reboot system now. Done.