I was checking my cell bill and noticed the data charges were quite high and with a little investigation I see that the new iOS10 made a few setting changes that, I don't believe should be ON by default.
Ever heard of the new WiFi Assist?
It says it is being "helpful" but let's say you are using WiFi that in your basement and it isn't a great signal but works for you, Apple decides that it will automatically shut that off and use your cellular data! What if you don't have a very large plan and you were watching netflix? I am cringing just typing this. I can see this 'feature' being removed very soon but please think about it before you keep that default setting on!
OTHER THING TO DO: