Advanced apologies if this has been discussed here already. Just send me the link.
I am using an iPhone 6 and I get this message "Mobile device CPU fully loaded. Related performance will be affected."
What is the cause of this and how do I fix it?

I am using an iPhone 6 and I get this message "Mobile device CPU fully loaded. Related performance will be affected."
What is the cause of this and how do I fix it?
