A: If you feel that the vibration is not strong enough for you, you may adjust both the vibration strength and pattern. These can be found in the app’s menu under Settings → Vibration → Vibration Strength / Vibration Patterns.If after increasing the strength the vibration is still too weak, try placing the device a little higher up (or slightly to the side of) your spine. Most people feel the vibration more intensely when it's positioned higher up their back.