A-Technology Ltd. OPTIMA Manual Do Utilizador
16. Open the system menu and you can find various tools and applications.
17. If want to change the network, please click below marked WiFi icon.
18. You can click turn off icon to close your device in system menu. Also can hold and
keep pressing the power button for several seconds, then the screen appear”Slip
down to shut down your device”. Then slip down can turn off the device.
keep pressing the power button for several seconds, then the screen appear”Slip
down to shut down your device”. Then slip down can turn off the device.