In order to hard reset a AEG X90, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
AEG X90 device will be brought back to the default configuration of a brand new device.
1. Power up the device.
2. Continue by going to Menu, Settings, Reset and Master Reset.
3. Lastly, select Yes and type in the 1234 safety code.
4. Done. The hard reset process is now complete.