How to active Developer Options ACER Liquid Z205 - enable USB Debugging

How to enable USB Debugging? How to open Developer Options? How to active Developer Mode? In this tutorial we explain step by step how to open Developer Mode in ACER Liquid Z205 smartphones. From the Android Developer Options sectiont you can enable plenty of hidden phone's features. More info: http://www.hardreset.info/devices/acer/acer-liquid-z205/videos/