Philips Sonicare EliteRechargeable toothbrush with 2 modes

How does the brushing guidance work in the Sonicare app?

Which brush head fits my Sonicare toothbrush?

In which countries is the Sonicare app available?

Can I replace the battery of my Sonicare toothbrush?

Why is there a gap between my brush head and handle?

I cannot connect my toothbrush to the Sonicare app

My brush head falls off my Sonicare toothbrush

My Sonicare toothbrush is not vibrating

My Sonicare toothbrush turns off by itself

My Sonicare toothbrush is vibrating less powerfully