TRUEFREE B1 Earbuds User Manual and Troubleshooting

Bluetooth Connectivity

First Time of Use:

1. Take out the two earbuds and tear off the isolation film. Place them back into the charging case for new device activation.
2. Take out the two earbuds again.
3. Refresh the Bluetooth device list on your phone and pair with "TRUEFREE B1".

How to reset TRUEFREE B1?

Clear pairing records. This method is used when the connection cannot be done normally.

When the earbuds are not connected to the device, tap the earbud touch panel 5 times within 30 seconds after taking them out of the charging case. The earbud white light flashes 5 times. After the flashing stops, the reset is complete.

After restoring factory settings, you can use it normally by connecting using the first pairing method.

Why is the Bluetooth connection unstable sometimes?

What can I do if the earphones stopped connecting to my device?

1. Clear the pairing record between the earphones and all previous devices.
2. Try to clear some Bluetooth listings on your device and restart the device.
3. Put the earphones into the charging case to reset.

What can I do if the left earphone and the right earphone won't work together?

1. Use a bit of light sandpaper or microfiber cloth with a bit of rubbing alcohol to clean the charging connectors to ensure the earphones charge well.
2. Put them into the charging case to reset.

What can I do if the earphones connect to my phone, but not my Mac-book/computer?

1. Unpair the earphones from the phone, then the earphones will lose Bluetooth connection to the phone.
2. Put the earphones into the charging case to reset.
3. Open the Bluetooth of your Mac-book/computer to connect.
4. If those do not help, update your computer's Bluetooth driver. Bluetooth drivers must come from the specific manufacturer for your exact computer model. Download and install the appropriate Bluetooth driver from the computer vendor's website, then restart your system before attempting to pair.

Why is the signal intermittent when I am outdoors?

In the outdoors, the Bluetooth signal can be interfered by subways, high-speed rails, trains, dense traffic lights, car engines, and so on. If the phone is in your pocket and the earbud is diagonal to the phone, it will affect the Bluetooth signal. The human body is the biggest source of signal blocking. So when the left earphone is the primary earphone, please put your phone in the left pocket for better signal.

Why the earphones cannot connect to my TV or watch?

Please clear the pairing record between the earphones and all of your other devices first, then reset them as per the user manual. If it does not help, please contact TRUEFREE.

Sound Issues

Why does the volume of the earphones reduce after using a period of time?

1. It may be caused by the sound hole being blocked by foreign objects. Gently clean it with a little alcohol to avoid dust or secretions blocking.
2. Please change other devices to see if the problem still exists.
3. Please reset the earphones.

What can I do if one earphone is quieter than the other?

1. Please change other songs or videos. For some songs and videos, the sound effect is unstable.
2. Please change other devices. You can try this way:
   • Unpair and delete from your original device.
   • Pair to a new device and play music.
   • Unpair and delete from this new device.
   • Pair back with original device.
3. Please clean the sound hole.
4. Try to reset the earphones.
5. Please also adjust the "Audio Equalizer” in your phone:
   • For iPhone: [General] > [Accessibility] > [Hearing]
   • For Android: [Accessibility features] > [Accessibility] > [Audio balance]
6. Do a test of “Adaptive EQ” in the Application.

Why the other side could not hear me when calling?

1. Please choose to pick up phone calls via the earphones.
2. Please do not mute the phone calls.
3. Please clean the Mic holes to avoid dust or secretions blocking.
4. Please wear both earphones instead of any single one.
5. Please adjust the volume through the earphones and devices.
6. If you are using the earphones with an Android phone, check the settings to see if you have allowed both phone audio and media audio to be transmitted through the earphones.
7. Please change other devices to have a try.

Why doesn't the mic work well when the earphones are connected to the PC/laptop?

When connecting earphones to a PC/laptop, some devices with older Windows versions may show two lists: "TRUEFREE B1 Hands- Free AG Audio" and "TRUEFREE B1 Stereo". Please choose "TRUEFREE B1 Stereo" to play media audio. For call audio, you can manually change to "TRUEFREE B1 Hands- Free AG Audio".

If you want to use call audio via the earphones on your Mac or Windows, please set the following:

A) Input device: Disable Realtek(R) Audio as speaker and "TRUEFREE B1 Stereo".

B) Output device: Disable Realtek(R) Audio as microphone or stereo mix.

C) Please set "TRUEFREE B1 Hands- Free AG Audio" as the Input device and Output device. Then you will use earphones to make call audio.

Charging

What does the indicator light of the charging case display?

• Charging the earbuds: The red light stays on during charging and goes off when fully charged.
• Charging the charging case: The white light flashes while charging. The white light stays on when fully charged.

How to charge the charging case?

1. Connect the Type-C charging adapter to charge it (charging current should not exceed 1A).
2. When not in use for a long time, charge it at least once every three months.

What should I do if the charging case won't charge?

Try using another known working charging cable to charge the charging case for more than 10 hours through your computer. (Take the earphones out of the charging case when you charge it.) Compared to other electronics, the earphones are low power products. For charging safety, please do not use a fast charger.

Why are the earphones still connecting to my phone after placing them back and closing the case lid?

1. The charging case has no remaining power. Placing the earphones back into the charging case cannot turn them off if the case battery is dead.
2. Please make sure the earphones are correctly placed in the charging case, and the charging contacts are clean. Clean the places between the charging case and the earphones with something like a microfiber cloth.

Does the earphones not using for a long time without charging cause the earphones not to turn on or the battery to drain quickly?

The battery of the earphones needs maintenance. Charge your electronics at least every three months. Otherwise, earphones can cause deep self-discharge by not charging for a long time, damaging the battery. Also, not using the earphones for a long time, or storing them in a humid location, can cause damage. If you haven't used your earphones for several months, the battery is probably dead.

Check if the charging case has power (indicator light is on) and if the charging contacts at the bottom of the earphones and charging case are dirty. If dirty, clean the charging contact at the bottom of the charging case with a dry cloth or dry paper towel. If earphones do not turn on or the battery drains rapidly when taken out of the case, repeatedly place the earphones into the charging case for 2 hours and close the cover. Try this for 1-2 days.

Why the battery life of the left and right earphone is inconsistent?

Generally, the main earphone consumes more power. The difference may be within 10%.

Why the battery life of the earphones does not match the product page promotion?

The product promotion page includes the duration of a single charge of the earphones and the total duration of use with the charging case. The battery life of earphones is related to volume and Bluetooth encoding.

Why the earphones do not charge or the volume decreases after being exposed to rain?

The earphones support waterproof. After encountering water, please dry the earphones with a hair dryer and clean the charging port in a timely manner to ensure a dry environment before putting them into the charging case. The product promotion page includes the duration of a single charge of the earphones and the total duration of use with the charging case. The battery life of earphones is related to volume and Bluetooth encoding.

Touch Control

What can I do if the touch controls do not work always?

1. Please touch the middle of the control zone. When your hand is wet, the touch control may not work; keep your hand dry.
2. Try to skip the songs more times; you will find the best frequency to control the earphones. If you don't find the frequency, you may think the earphones don't work, please be patient.
3. Another way to try: discharge the earphones, then charge and reset.

APP Usage

How to register an account?

1. Fill in email address; set and confirm password (use a combination of letters and numbers, avoid special characters).
2. Click "get verification code".
3. Type in the code you get from your email.
4. Finish registration.

Fail to receive the verification code?

1. Make sure your phone is connected with good network and try to send the code again in about 2 minutes.
2. Check your spam folders/junk inbox first.
3. Try to register with a different email address, uninstall the App, then reinstall it and restart your device to register again.
4. Manually type your email into the area instead of using auto-fill. Pay attention to the format of English letters and spaces before and after the email address.
5. Try to turn off anti-virus software. If you have data encryption software on your phone, you may have to turn it off momentarily.

What can I do if the earphones won't connect to the APP?

1. Check if your TRUEFREE earphones app has been updated to the newest version. Log in to the app and find "about" to check the TRUEFREE version. Upgrade to ensure you have the newest version.
2. Make sure that the earphones Bluetooth name is the default “TRUEFREE B1“. If you changed the default name, change it back to its original format. Then restart your phone. Changing the default Bluetooth name may cause connection issues with this app.
3. Make sure the location function of your mobile phone is turned on, and authorize the app to obtain all necessary permissions from your phone to make the connection easier. Allow the app to always access phone information and do not choose the blank pass of the system.
4. Make sure both earphones pair with each other, then connect to your phone first. After the earphones connect to your phone, open the app to connect the earphones.
5. If the earphones still cannot connect to the app, follow these steps:
   • Turn off the earphones app completely (turn off background running of the app totally).
   • Unpair the earphones via your phone, then turn off phone Bluetooth.
   • Put the two earphones into the charging case and perform a reset as per the manual.
   • Reconnect the earphones to your phone after the reset (ensure TRUEFREE APP is off in this step).
   • Re-open the app to search for earphones to connect to the app.

What can I do if the APP could not update?

Please try the following:

1. Reset the earphones as per the manual.
2. Take the earphones out of the charging case and leave some time for the two earphones to pair with each other. Turn on your phone's Bluetooth to connect with the earphones.
3. Make sure your phone is connected with good network. Turn off the app and reopen it.
4. Try to connect the app with your phone and perform the upgrade again.

Precautions during the app upgrade process:

1. During the upgrade, the distance between the earphones and the mobile phone must be within 0.5 meters.
2. Do not put the earphones into the charging case.
3. Do not disconnect, play music, or answer phone calls.
4. Do not close or shrink the upgrade page.

Dual Device Connection

Follow these steps:

1. Pair the headsets with Device A first. After successful pairing, turn off the Bluetooth function on Device A.