Philips Sonicare DiamondClean Prestige 9900Rechargeable Toothbrush

In which countries is the Sonicare app available?

How does the brushing guidance work in the Sonicare app?

What features can I activate or deactivate from the toothbrush handle?

How does the Scrubbing Feedback feature work?

How does Sonicare 9900 Prestige work with the app?

My brush head is difficult to attach or remove.

My Sonicare toothbrush is not charging

My Sonicare toothbrush makes a loud noise