Mobile GUIs differ from desktop GUIs in several ways:

1. Screen size and resolution: Mobile devices have smaller screens and higher pixel densities.

2. Touch input: Mobile devices rely on touch gestures, whereas desktops use mouse and keyboard.

3. Mobile-specific controls: Mobile GUIs use controls like sliders, switches, and picker views.

4. Simplified layouts: Mobile GUIs have simpler, more focused layouts due to screen size constraints.

5. Vertical orientation: Mobile devices are typically used in portrait mode.

6. Limited multitasking: Mobile devices have limited multitasking capabilities.

7. Context-aware design: Mobile GUIs often use location services, camera, and sensors.

8. Gesture-based navigation: Mobile GUIs use gestures like swiping, tapping, and pinching.

9. Power management: Mobile GUIs need to conserve battery life.

10. Platform-specific guidelines: Mobile GUIs follow platform-specific design guidelines (e.g., Material Design for Android, iOS Design Language for iOS).

11. Scrolling and pagination: Mobile GUIs use scrolling and pagination to handle content overflow.

12. Font sizes and readability: Mobile GUIs require clear, readable font sizes.

13. Tap targets and spacing: Mobile GUIs need large tap targets and sufficient spacing.

14. Feedback and animations: Mobile GUIs use feedback and animations to enhance user experience.

15. Connectivity and offline support: Mobile GUIs often require offline support and handle network connectivity changes.

By considering these differences, developers can create mobile GUIs that are optimized for smaller screens, touch input, and mobile-specific use cases.