That's why I use a Note. The S-Pen has a storage place in the phone. I also have a little no-name pen View attachment 268257
with a little "plug" to plug into the earphone jack to keep it with the phone, but that's not as good as an internal "garage" for a pen.
You can download Samsung Notes. And Evernote and Microsoft Word allow stylus/pen drawing too. You can also draw on Gallery photos. But yes, there is obviously no write om screen on off which is unique to the Note line.
All pro and cons here. I just use it for very basic stuff. Yes a fine point would be awesome but this was the best I could find. I'd love to rock the Note but in the end it just came down to $$$. People that got the Note 7 price were the ones that really made out.