Add shortcut to mobile home screen

Summary - iPhone

1. Step 1: On bottom of screen touch "box with up arrow"
2. Step 2: touch "Add to Home Screen"
3. Step 3: touch "Add" in upper right

Details - iPhone

Summary - Android

1. Step 1: On top right of screen touch "three dots"
2. Step 2: touch "Add to Home Screen"
3. Step 3: touch "Add" in the popup window

Details - Android