How can I change the font size and font on my iPhone?

I am having trouble reading the notes and texts on my iPhone. I cannot find a way to enlarge the font or change the font. Can anyone help?How can I change the font size and font on my iPhone?
1.) LAUNCH MAIL ON YOUR MAC.

2.) CLICK NOTE

3.) CLICK FONTS

4.) CLICK SIZE YOU WANT

5.) IF YOU SO DESIRE CLICK COLORS

6.) SELECT A COLOR

7.) CLOSE THESE DIALOG BOXES

8.) TYPE A NOTE

9.) CLOSE THE NOTE

10.) IF YOU HAVEN’T CHOSEN TO SYNC NOTES…

11.) WITH YOUR iPHONE CONNECTED, OPEN FINDER

12.) CLICK ON YOUR iPHONE

13.) CLICK THE INFO TAB

14.) CLICK SYNC NOTES

15.) BELOW THAT IN THE RIGHT CORNER CLICK SYNC

16.) NOW WHEN YOU OPEN THE MEMO PAD THE NOTE WITH THE LARGER FONT WILL BE THERE.

17.) YOU CAN EITHER COPY %26amp; PASTE THAT FONT INTO OTHER MEMOS OR CREATE MULTIPLE NOTES IN MAIL WITH JUST A “Z” TYPED IN IT TO USE AS TEMPLATES. I SAY A “Z” BECAUSE WILL APPEAR AT THE BOTTOM OF THE LIST, IF YOU SORT SUBJECT.