General iPhone question.
I have the 6s Plus, have had it for about a month, it's also my first Apple device EVER. I never got one because I refuse to use phones smaller than 5.5 inches. So all I have ever had was Android, and my last phone was actually a Windows phone running Windows 10 Mobile on the insider program. So I don't know much about Apple really. I was wondering, why does apple always release a phone, then the next one is the same number, just with an "s" added? Why not just go to iPhone 7/+ instead of iPhone 6s/+? I never understood the whole "s" thing. Thank you, sorry if this is a stupid question, but I am really a noob when it comes to Apple and all their products,
Sent From My iPhone 6s Plus