Where to place buttons on a phone application

1. Where should I put mobile buttons?
2. Where should call to action buttons be?
3. How big should buttons be on mobile?

Where should I put mobile buttons?

Optimal button placement follows the Gutenberg Principle. You should place your buttons at the end of the user's scanning path when they're ready to take action. There are rare cases when users are ready to take action before scanning, but this is only when they're already familiar with the screen content.

Where should call to action buttons be?

Call-to-action buttons placed towards the bottom or to the right of content often outperforms alternative placements. Most importantly, never force users to backtrack in order to click a button – CTA buttons should appear in appropriate places that align with a user's experience.

How big should buttons be on mobile?

Studies by the MIT Touch Lab suggest that 10mm × 10mm is the best minimum size for buttons on mobile due to the average size of fingertips.