Google PRINCIPLES OF MOBILE SITE DESIGN: DELIGHT USERS AND DRIVE CONVERSIONS - Manual (Page 32)

Mobile users will notice and be delighted by the small
things you do for them to enhance their experience.
This section discusses how to design your entire site to
account for mobile’s form factor and unique user needs.
19 OPTIMIZE YOUR ENTIRE SITE FOR MOBILE
20 DON’T MAKE USERS PINCH-TO-ZOOM
21 MAKE PRODUCT IMAGES EXPANDABLE
22 TELL USERS WHICH SCREEN ORIENTATION
WORKS BEST
23 KEEP YOUR USER IN A SINGLE
BROWSER WINDOW
24 AVOID “FULL SITE” LABELING
25 BE CLEAR WHY YOU NEED A USER’S LOCATION
32
USABILITY & FORM FACTOR
PRINCIPLES