Safari History
How do I find my Safari History on an iPhone 6 Plus?
iPhone 6 Plus, iOS 9.3.3
The following is with both a 5s and an iPad but I suspect it is similar on a a 6Plus:
Open Safari
Tap the Bookmarks icon (looks like an open book)
Tap Bookmarks icon again if the window opens to either Reading List or Shared Links
Tap History