Data usage monitor not working

[Mark65]

When I go into it, it crashes and says 'Unfortunately settings not working '.
Settings is working, other functions work.

[Samuel1]

Have you tried restarting the phone?

[Mark65]

Yes, doesn't solve it.

FWIW Am running a Power Doctor application
And a Junk removal application.

[Samuel1]

First of all I would recommend to remove all power saving/junk removal apps as these tend to do more harm then good. Second I'd say you should repair the phone software using PC Companion..

Before repairing your device you may want to backup your information first. Check out this topic for more information on how to.
How to backup?

[1adrian1]

Those type of apps are a waste of time and usually have the opposite effect if you must use one use all in one toolbox.