Users expect login/signup forms to take only a few minutes to complete. When they encounter forms asking for irrelevant information, they leave. Additionally, ambiguous input labels and general error messages reduce the likelihood of form completion.

How can designers simplify login/signup forms on mobile? Limit questions to only the most relevant ones. Too many obstacles can discourage users from exploring the app. Let them enjoy the app first, then ask for details at a more appropriate time.

Sometimes, apps need more data to unlock full functionality. To prevent abandonment, here are tips to make long forms less overwhelming:

• Use smart defaults that match most users' preferences.^[1]
• Automatically prefill data based on permissions, like location or personal info.
• Implement input masks to reduce cognitive load and adjust input formatting automatically.