Philips Sonicare 4100 vs Xiaomi Mijia T100

The Sonicare 4100 is what dentists point to when patients ask what to buy. The T100 is what you buy when you're not ready to listen to your dentist yet. That's not a knock on the T100 — it genuinely cleans better than a manual brush — but there's a real gap in cleaning efficacy, gum care, and build quality that the price difference reflects honestly.

This sounds like a spec-sheet detail until you realize that brushing too hard is one of the most common causes of gum recession and enamel wear. The 4100 warns you when you're overdoing it. The T100 lets you grind away without any feedback. If you're already a heavy-handed brusher, the T100 could actually make your dental situation worse.

The Sonicare 4100 runs for weeks on a single charge — you charge it, forget about it, and it's still going. The T100's battery life is serviceable but noticeably shorter, which matters when you're traveling or just hate the mental overhead of another device to charge. It's a small thing until it isn't.

The T100's cheap replacement heads are a genuine advantage — until you run out and realize you have to order them online and wait. Sonicare heads are expensive by comparison, but you can grab them at any pharmacy or big-box store the same day you need them. Depending on where you live and how you shop, this could flip either way — but for most people, local availability wins.