Sonicare DiamondClean Smart Sonic electric toothbrush with app

Personalized coaching, Smart brush head sensors, Smart brush head recognition, 4 modes, 3 intensities HX9903/01

Frequently Asked Questions

My Sonicare toothbrush vibration is not powerful enough

If your Philips Sonicare toothbrush vibration is not powerful enough, you can often solve this yourself. Make sure that your Sonicare toothbrush is fully charged.

Disable the Easystart function

The Easystart function on your Sonicare toothbrush might be activated. Disable the Easystart function for DiamondClean Smart toothbrushes:

  1. Place your DiamondClean Smart on the charger.
  2. Hold the mode/intensity button and press the power button once
  3. The handle will beep once to confirm it is disabled

When the handle will beep twice, the Easystart function is enabled. Please make sure to disable again using the instructions above.

Select the right mode

Try using different modes and find the optimal brushing experience for you.

Intensity settings

Your toothbrush has different high, medium and lower intensity settings. Try using a higher intensity and find the optimal brushing experience for you.

Replace your Sonicare brush head

Older brush heads can seem less effective or powerful while brushing. If your brush head has been in use for more than 3 months, we recommend replacing your brush head.

The information on this page applies to the following models: HX9903/01 , HX9903/11 , HX9903/21 , HX9903/41 , HX9957/51 , HX9985/08 , HX9985/48 , HX9985/28 , HX9985/18 , HX9985/01 . more less

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