On the main menu, locking/unlocking screen, wattage/temperature adjustment, resistance fine-tune, VW/TC mode Switch function are available. When screen locked,you can still vape. To get into device, slide the scroll bar to the right. Or if you want to lock your device,please click the lock icon. In order to avoid wrong operation,once you press the fire button screen will be locked automatically. And if you want to adjust wattage/
temperature/resistance, please click the corresponding value. You can also easily switch VW/TC mode by clicking the wattage/temperature value.