Description
1. How to Knock?
Hold your phone upright with your thumb facing upwards. Imagine your phone is a drumstick, then make a downward knocking motion.
2. How to Change Sound Effects?
Imagine your phone as a drumstick and roll it in a full circle to switch to a new sound effect.
Here’s another example: imagine your phone as a bar of soap. Just like washing your hands with soap, rotate it in a circle to change the sound effect. XD