If you are going to offer smart features you need to encourage use and a smartphone stand would have been helpful in this case, to give the phone a home rather than the user having to hold it or place it on a work surface.

I understand why though. If it did, there is no way of showing what mode it is on, unless you use the app.

As good as the app is, I feel this may also be one of the negatives as some will not see the point of using it or find it more hassle than it’s worth. You don’t have to if you don’t want to.

Just relieve the pressure and the light will go out and the motor power up again. Just remember to let the bristles essentially glide across the tooth surfaces. As a result of this change, the Smart 4 and other models now have a battery life more fitting of the current climate.At times I have found these distracting, you may want to customise the settings to avoid some notifications. With the Smart 4 4000, a 2 year/24 month warranty is included as standard from the time you buy the brush.

Does this Smart 4 have the ability to turn off the timer? If not, which brush should I be looking for?The Oral-B Pro 2 2000 has 2 cleaning modes, the Pro 3 3000 has 3 cleaning modes, the Smart 5 5000 has 5 cleaning modes, so as you would imagine the Smart 4 has 3 cleaning modes….Yes, I know, I can’t quite figure that out either. When you brush, sensors within the brush detect if you are applying too much force to your teeth. When it detects this, it activates the pressure sensor. Another small but significant thing to remember is; put the brush in your mouth before powering on and changing modes otherwise the toothpaste might go flying across the room.