I don’t think iPhones support wireless charging yet. As far as i know, from picture 3, you plug the little pad into the charge socket, stick the pad to the back of the phone and then the pad will draw up the charge from the base and charge the phone that way. It’s a bit ugly on your phone and will probably mean the cover no longer fits.
I could be wrong but I think the new iPhones (iphone X) will finally be supporting wireless charging and I'm sure subsequent Apple products will follow suit. Any current Apple products don't yet support it though so won't work.
A lot of the more recent Samsung products do support wireless charging though so should work just fine for charging them, though do double check if your Samsung product is one that supports it.
I’ve got this one and have an iPhone 6, you just connect card thingy via the charging port and as long as you’ve got a casing you don’t need to ever remove it. I love it although it went a bit weird and wasn’t doing a full charge after the lastest iOS upgrade but is working fine now.