Tips for better results!
As described in the How it works page, BenchmarkPi results in the time your mobile device takes to run and complete the Pi calculation algorithm resulting in a approximation of the first Pi digits. That heavily depends on the load of your mobile phone's CPU. If your CPU is not already loaded with background processes, you should get better results.
Better results can also archived with faster CPU so you can also check the processing power of different devices.
AndroidTapp published a very good article titled: "5 Tips on How to Increase Perfomance on your Android Phone".
- Turn Off Effects
- Reduce Home Screen Widgets
- Reduce Home Screen Icons on Home Screen
- Factory Reboot
- Root it