Oral-B 3771 - User Manual

Questions and Answers

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Melissa FrankAug 9, 2025
Why is my Oral-B 3771 handle not charging?
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  Danielle RiosAug 9, 2025
  Your Oral-B Electric Toothbrush handle might not be charging because the battery is at a very low level, and it may take 10-15 minutes until the display turns on. Also, the ambient temperature might be out of the valid range (less than 0°C or greater than 40°C), or the charger may not be properly connected. To resolve this, charge the handle for at least 30 minutes. It is recommended that the ambient temperature for charging is 5°C to 35°C. Also, ensure the charger is connected to the mains voltage.
J
jessicabeardAug 19, 2025
Why does my Oral-B Electric Toothbrush make rattling/loud noise during brushing or turning on?
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  Scott StaffordAug 19, 2025
  The rattling or loud noise during brushing or turning on your Oral-B Electric Toothbrush may be due to the brush head not being placed correctly onto the brush handle, or the brush head may be worn. Check that the brush head fits properly on the handle, noting that a small gap remains in between. If the brush head is worn, replace it.
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Andrea ElliottAug 29, 2025
What to do if my Oral-B 3771 Electric Toothbrush handle is not operating during first use?
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  beckdavidAug 29, 2025
  If your Oral-B Electric Toothbrush handle is not operating during the first use, it could be due to a very low battery charge or operating outside the standard temperature range. If the battery has a very low charge, charge it for at least 30 minutes. Always operate the toothbrush in standard operating temperatures (greater than 0°C and less than 40°C).

Summary

Important Safety Information

Product Inspection and Safety Guidelines

Regularly check for damage and follow safety guidelines for use.

Product Integrity and Usage

Child Usage and Supervision

Guidelines for safe use by children and supervision requirements.

Child Safety and Supervision

Guidelines for children's use and supervision requirements.

Charger and Cord Safety

Proper usage and safety precautions for the charger and power cord.

Charger and Appliance Safety

Safety precautions for the charger, cord, and appliance.

Warnings and Precautions

Charger Placement and Water Hazard

Do not place charger in water or where it can fall.

Cord Handling and Battery Safety

Avoid cord damage and note non-replaceable batteries.

Cord Handling and Battery Information

Unplugging and Medical Advice

Safe unplugging practices and consulting a dentist.

Unplugging Safety Precautions

Important Information

Magnetic Fields and Medical Devices

Information on magnets and their interaction with medical devices.

Medical Devices and Bluetooth

Bluetooth Usage in Restricted Areas

Disable Bluetooth in aircraft or hospitals.

Pacemaker Safety Guidelines

Recommended distance for pacemaker users.

Pacemaker Safety Distance

Maintain distance from pacemakers when toothbrush is on.

First Use Setup

Initial Setup Procedure

Follow on-screen prompts for initial setup.

Initial Toothbrush Setup

Charging and Operation

Charging the Toothbrush Battery

How to place the toothbrush on the charger.

Charge Level and Time

Indications of charge level and typical charging time.

Low Battery and Usage Requirements

Behavior on low battery and minimum charge for use.

Temperature Considerations for Charging

Optimal temperatures for battery maintenance and charging.

Using Your Toothbrush

Starting the Brushing Process

Attaching the brush head and beginning to brush.

Brushing Technique and Guidance

Timer Functionality

Brushing Time Signals

Quadrant Brushing Signals

App Timer Customization

Smart Pressure Sensor Features

Connecting Your Toothbrush to Smartphone

Trouble Shooting

APP Operation and Connectivity Issues

Handle Operation and Setup Issues

Troubleshooting handle not operating, temperature, and timer issues.

Trouble Shooting Toothbrush

Handle Not Operating (First Use)

Troubleshooting for a handle that does not operate initially.

Temperature and Timer Issues

Charging and Noise Problems

Troubleshooting charging issues and unusual noises.

Charging and Operating

Toothbrush Charging Process

Place toothbrush on charger; charge level is indicated.

Charge Time and Battery Level

Empty Battery Usage and Charging

Battery Maintenance and Temperature Limits

Smart Pressure Sensor

Pressure Indicator Color Meanings

High Pressure Mode Reduction

Connecting to Smartphone

App Download and Bluetooth Pairing

Download Oral-B App and pair via Bluetooth following instructions.

Smartphone Requirements and Proximity

Handle Not Charging

Charging Issues Explained

Oral-B 3771 Specifications

General

Brand	Oral-B
Model Number	3771
Type	Electric Toothbrush
Waterproof	Yes
Power Source	Rechargeable Battery
Cleaning Modes	Daily Clean
Timer	2-minute timer
Pressure Sensor	Yes
Charging Time	Approximately 12 hours
Compatibility	Compatible with Oral-B brush heads
Warranty	2-year warranty
Battery Life	Up to 10 days
Charger Type	Inductive charging