Problem:

The phone/tablet occasionally displays time on half of the screen while displaying the other half in black.

Cause:

The phone/tablet may have entered Smart cover.

Once enabled, Smart cover will be triggered when the Hall effect sensor detects that your phone's/tablet's flip cover is closed. Your phone/tablet will then display the date and time on one half of the screen and turn off the other half. This issue may happen when there are magnetic objects (such as a speaker) or strong magnetic fields nearby (such as from an electromagnetic oven, microwave oven, or wireless charging base). (This issue will not occur in phones/tablets without a Hall effect sensor.)

Solution:

1. Keep your phone/tablet away from magnetic objects or strong magnetic fields (such as from an electromagnetic oven, microwave oven, or wireless charging base).
2. You can also open Settings, search for and assess Smart cover, then disable Smart cover. (If no result is found, your phone/tablet does not support this mode.)

3. If the issue persists, back up your data and take your device to a nearby customer service center for assistance.

The Hall effect sensor is a magnetic field sensor made according to the theory of the Hall effect, which can sense changes of a surrounding magnetic field and has good anti-interference performance.

Smart cover mode works based on the Hall effect sensor, which determines whether the flip cover is closed by sensing the magnetic field of the magnet on the cover.