Turn on your screen and launch a lightsaber opening sound. Turn off your screen and powerdown.
Sound effects include:
- Sonic Phonedriver
- Indiana Phone
- Iron Phone Blaster
I have tested this on my device, Samsung Galaxy S6 Edge +, for months and it drains 0% battery (does not include system sounds, which is also insignificant). The reason Phonesaber is battery efficient is because it does not require network connection and waking the Wi-Fi radio.
Optimized for battery
Optimized with a low memory mode.
Takes on average 25 MB RAM, with one foreground service. This actually isn't memory expensive, you can manage this under settings->system->developer options->process stats. Peoplestripe and Google Play services are typically more expensive. Phonesaber is run without bind which allows it to be active even when the app is closed.
You can disable applications at any time with application manager->running->phonesaber->stop.