Samsung J1 SM-J120F - Manual (Page 18)

Basics
18
Formatting the memory card
A memory card formatted on a computer may not be compatible with the device. Format the
memory card on the device.
On the Home screen, tap
→ Settings → Storage → Format SD card → FORMAT SD
CARD → ERASE EVERYTHING.
Before formatting the memory card, remember to make backup copies of all
important data stored in the memory card. The manufacturer’s warranty does not
cover loss of data resulting from user actions.
Turning the device on and off
Press and hold the Power key for a few seconds to turn on the device.
When you turn on your device for the first time or after performing a data reset, follow the on-
screen instructions to set up your device.
To turn off the device, press and hold the Power key, and then tap
Power off.
• If your device is frozen and unresponsive, press and hold the Power key and the
Volume Down key simultaneously for more than 7 seconds to restart it.
• Follow all posted warnings and directions from authorised personnel in areas
where the use of wireless devices is restricted, such as aeroplanes and hospitals.
Touchscreen
• Do not allow the touchscreen to come into contact with other electrical devices.
Electrostatic discharges can cause the touchscreen to malfunction.
• To avoid damaging the touchscreen, do not tap it with anything sharp or apply
excessive pressure to it with your fingertips.
• The device may not recognise touch inputs close to the edges of the screen, which
are outside of the touch input area.
• Leaving the touchscreen idle for extended periods may result in afterimages
(screen burn-in) or ghosting. Turn off the touchscreen when you do not use the
device.
• It is recommended to use fingers when you use the touchscreen.