Phone

For many people, the phone is the main way they use the internet. The example shows a transit ticket: the key details and an Activate Ticket button fit on one screen.

People often use phones on the move, with one hand and with frequent interruptions. Tasks need to be quick to start and easy to resume.

When designing for phones:

• Put the most important information and action first.
• Make touch targets large enough to tap reliably, such as 44 × 44 pt on iOS or 48 × 48 dp on Android.
• Keep frequent actions within easy reach of the thumb.