Other than display component failure, which of the following can cause a dim display on a mobile device? (Choose all that apply.)

a. Very low charge level
b. Incorrect video cable selected
c. Power management
d. Manual display brightness

A C D On any device, check the brightness settings first. Smartphones and tablets typically use auto brightness. Disable it and try adjusting the brightness manually. Also, check the charge. Many devices set the screen to a very dim setting right before shutting down in a last-ditch attempt to stretch battery life. If the screen doesn't return to normal brightness after being connected to AC power, service it. If the display dims after the device has been turned on for several minutes and left unattended, the most typical cause is a power management setting. Adjust power management settings as desired.