leave your phone everywhere, in the cupboard, under the pillow, under the quilt, in your messy bag! your wife, children hide your phone! you always put your phone in silent mode. network not available. if the phone could tell me "i'm here! i'm here!", when i call it. [features] 1. reset counter timer to avoid wake up your phone in the wrong time. 2. set whistle target to control the difficulty to wake up your phone. 3. set audio volume 4. enable audio repeat after media play complete. 5. choose audio to play when your phone wake up. 6. enable run service, it will execute in background when you leave the setting page. 7. enable boot start, it will auto execute after reboot. 8. whistle detection service auto stop when you are dialing. 9. auto stop media play after screen open. 1