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Speed is fast using Wi-Fi but slow using 3G. How can I improve this?

In a slow network such 3G, screen refresh will be slow due to bandwidth limitation and variable signal strength.

To improve this, follow the instruction below:

1. Tap once any part of the screen.
2. Tap 'R' button.
3. Select Settings (gear icon).
4. Check on 'High Speed Control Mode'.
5. Select lower Screen Color.
6. Select lower Screen resolution.