We know how important it is to maintain a healthy smile, so we're sorry to hear about your Oral-B iO Series 9. We'd love for you to brush alongside your wife with this brush, so we'd love to hear from you about this, and learn more about what's going on with your toothbrush. At your leisure, please give us a call at (800) 566-7252.

When brushing 4 minutes a day, we expect your iO Series 7 to last around 2 weeks. We're sorry it's not lasting as long as you had expected. Please charge the brush for 24 hours, discharge it completely, fully charge the brush again, and repeat 2-3 more times. This may help improvise the battery performance, but we'd like to hear from you about this and help some more. Please call us at (800) 566-7252.

While we're glad our Oral-B App and iO Series 9 is helping improve your oral health, we're sorry that you're having issues with it tracking your brushing habits. Your feedback is important, and since we do many tests to ensure the app runs as smoothly as possible, we'd like to make a detailed report our team and figure out what's going on. Please call us at (800) 566-7252.