LG G2 keeps changing settings back to default

[Brymom2014]

My LG G2 will not let me make changes to things like brightness. Everytime I change the brightness it immediately goes right back to auto..I've tried changing it on the task bar and actually going into settings. Any idea of why it's doing this or how to stop it? TIA

[Snn5]

Have you installed any new apps since the problem began?  Try running the phone in safe mode by holding down the power button until the menu pops us and long-pressing on Power Off until the Safe Mode menu pops up.  If your problem goes away in Safe Mode, then you have an app at fault.  If the problem persists, you may need to perform a factory reset.