Aukey EP-T21S Manual | How To Use These Earbuds?  

The Aukey EP-T21S earbuds come with specs such as Bluetooth 5.0 with a working range of 10 meters and support for the A2DP, AVRCP, HFP, HSP, AAC technology, a battery life of about 5 hours, one 6mm speaker driver in each earbud, built-in microphones, the IPX6 waterproof certification, and much more. Learn how to use these earbuds using this manual!

Aukey EP-T21S Manual | Pairing & Troubleshooting

How to Pair The Earbuds?

To Android And iOS Devices

Step 1: Open the lid of the charging case. After that, the earbuds will turn on automatically. Also, you can press and hold the multifunction touch panel in both earbuds for about 2 seconds.

When a blue light starts flashing on the earbuds, it means that they are now ready to pair with any device.

Step 2: Unlock the desired device.

Step 3: Turn on Bluetooth on the desired device.

Step 4: Go to the device’s Bluetooth settings.

Step 5: Select the “AUKEY EP-T21S” earbuds. If a password is needed, write “0000”. After that, the pairing will be done.

To PC (Windows)

Step 1: Open the lid of the charging case. After that, the earbuds will turn on automatically. Also, you can press and hold the multifunction touch panel in both earbuds for about 2 seconds.

When a blue light starts flashing on the earbuds, it means that they are now ready to pair with any device.

Step 2: Unlock the desired device.

Step 3: Go to the Settings.

Step 4: Go to “Bluetooth and other devices”.

Step 5: Turn on Bluetooth on the device.

Step 6: Click on “Add device”.

Step 7: Select the “AUKEY EP-T21S” earbuds. If a password is needed, write “0000”. After that, the pairing will be done.

How to Wear?

Step 1: Take both earbuds out of the charging case.

Step 2: Identify the left and right earbuds.

Step 3: Choose the ear tips that best suit your ears.

Step 4: Insert the earbuds into the inner canal of the ears.

Step 5: Rotate for the best possible comfort and best fit, and make sure that the microphone is pointing to the mouth.

How to Turn On and Off?

Turn on: Open the lid of the charging case. After that, the earbuds will turn on automatically. Also, you can press and hold the multifunction touch panel in both earbuds for about 2 seconds.

Turn off: Place the earbuds into the charging case and close its lid. After that, the earbuds will turn off automatically. Also, you can press and hold the multifunction touch panel in both earbuds for about 6 seconds.

How to Control These Earbuds? – Stereo Mode

• Play or pause the music: Press the multifunction touch panel on any of the earbuds one time.
• Play the next song: Press the multifunction touch panel on the right earbud two times.
• Play the previous song: Press the multifunction touch panel on the left earbud two times.
• Answer an incoming call: Press the multifunction touch panel on any of the earbuds two times.
• End a current call: Press the multifunction touch panel on any of the earbuds two times.
• Reject an incoming call: Press and hold the multifunction touch panel on any of the earbuds for about 2 seconds.
• Activate the voice assistant: Press the multifunction touch panel on any of the earbuds three times.

How to Activate The Mono Mode?

To activate or deactivate the mono mode in these earbuds, all you have to do is to pair the earbuds to the device and take out one of the earbuds from the charging case. It will start working by itself.

How to Charge The Earbuds?

Earbuds

To charge the earbuds, all you have to do is to place them into the charging case and close the lid. The earbuds will start charging automatically.

Charging case

To charge the charging case, all you have to do is to connect the case to a USB charger or charging port with the included USB-A to C cable. It will start charging automatically.

How to Reset These Earbuds?

If there is a problem in the pairing process, or only one of the earbuds is working, then try resetting the earbuds by doing the following steps:

Step 1: Open the lid of the charging case and take the earbuds out. After that, the earbuds will turn on automatically.

Step 2: Press and hold the multifunction touch panel in both earbuds for about 6 seconds, so the earbuds turn off.

Step 3: Simultaneously, press and hold the multifunction touch panel in both earbuds for about 10 seconds. The earbuds will turn on, clear their pairing list, and turn off again.

Step 4: Place both earbuds into the charging case and close its lid to reset.

Step 5: Open the lid again, and both earbuds will turn on and enter pairing mode.

After that, the resetting process will be done.

What Do The Lights Mean?

Earbuds

• A blue light flashing: The earbuds are now ready to pair with any device.
• A red light on while on the charging case: The earbuds are charging.
• Said red light turns off while on the charging case: The earbuds are fully charged.

Charging case

• Four lights on for 5 seconds: The case has between 80% and 100% of battery.
• Three lights on for 5 seconds: The case has between 40% and 80% of battery.
• Two lights on for 5 seconds: The case has between 20% and 40% of battery.
• One light on for 5 seconds: The case has less than 20% of battery.

Some Common Earbuds Problems & Troubleshooting

Left / Right / One side of the earbuds has stopped working

If this happens, it may be because it is low on battery or it did not connect correctly with the device. To fix this, you can do the following:

1. Try charging the earbud that is not working or both, placing them in the charging case.

2. Try factory resetting the earbuds.

3. Check if the earbuds are operating within a normal working range

If that doesn’t work, the earbud is probably faulty, and I can go for a refund or replacement of it.

Left / Right / One side of the earbuds has a low volume

If this happens, it may be because the earbuds are dirty or the volume is set low. To fix this, you can do the following:

1. Try cleaning the earbud using a cotton swab or carefully clean the mesh with a pin.

2. Try factory resetting the earbuds.

The microphone is not working

If this happens, it can be because the microphone is muted, or the earbuds are badly positioned. To fix this, you can do the following:

If the microphone is muted, check the device microphone volume. If that doesn’t work, that means that there might be a defect in the earbud, so try replacing them or get a refund.

The earbuds are not connecting to Windows/laptop/PC

If the earbuds are earbuds not connecting, it can be because the Bluetooth on the computer has a pairing problem. To fix this, you can do the following:

1. Try disabling Bluetooth from nearby devices >>> then activate the pairing mode of the earbuds, pair and connect earbuds from Settings >>> Bluetooth & other devices >>> Add a new device >>>> select Bluetooth.

2. Try uninstalling and reinstalling the Bluetooth driver, or updating the Bluetooth driver. All can be done in Manage >>> Device Manager, reset earbuds (if available), and then repeat the step.

3. Try resetting the earbuds.

FAQs

We hope you now know how to operate the earphone from the above Aukey EP-T21S manual. Want to know anything about the earphones? Do not hesitate to ask in the comment section below.