If I erase all the contents in settings on my iPhone, what will happen? Will it still work?

If I erase all the contents in settings on my iPhone, what will happen? Will it still work?

Nothing will physically damage the iphone if you perform a factory reset. The same is so for any android device. It will run like it did when you first purchased and powered it on.

It won't erase iOS, but it will delete all the apps, music and photos you've installed.

You can't actually erase all of it

Everything will work just fine. It just sets the phone back to when first bought it and took it out of the box. You gotta set it back up and put apps n numbers etc all back onto it