SUPPORT FOR BLUETOOTH CONNECTIVITY
AND PAIRING OF HEARING AIDS

Bluetooth pairingTroubleshootingFAQs

Bluetooth pairing

Before you begin:
Turn off Bluetooth on your iPhone and power it down. Restart the phone and turn Bluetooth back on.
If this is the first time you’re pairing your hearing aids, you can skip steps 3 to 5.

  1. Turn off your hearing aids:
    • For battery-powered models, open the battery doors
    • For rechargeable models, place them in the charger
  2. On your iPhone, go to Settings > Accessibility > Hearing Devices
  3. Tap the name of your hearing aids
  4. Scroll down and tap Forget this device, then confirm
  5. Your phone will begin searching again (you’ll see “Searching” at the top)
  6. Turn your hearing aids back on by closing the battery doors or removing them from the charger. Then place them in your ears
  7. When your hearing aids appear with the label Not Paired, tap it
  8. Tap Pair when prompted. If you have two hearing aids, confirm both pairing requests
  9. After pairing, test your hearing aids to make sure they’re working properly

Before you begin:
Turn off Bluetooth and restart your phone. Once it’s back on, turn Bluetooth on again.
Skip steps 3 and 4 if this is the first pairing.

  1. Turn off your hearing aids:
    • Open the battery doors or place them in the charger
  2. Open your phone’s Bluetooth settings (either Bluetooth or Connected Devices)
  3. Tap the gear icon next to your hearing aids and select Unpair or Forget
  4. Repeat for any other listed hearing aids
  5. Turn one hearing aid back on
    • Close the battery door or remove it from the charger
  6. Tap Pair new device or Scan
    • Wait for both hearing aids to appear under available devices
    • Tap one of the names, then confirm pairing
    • The device will move into the paired section
    • Wait to see if the second hearing aid pairs automatically
  7. If the second hearing aid does not connect, repeat step 6 for it
  8. Once pairing is complete, confirm both hearing aids are connected and functioning

Rexton hearing aids use Bluetooth Low Energy to connect with mobile devices and to support audio streaming.

On Apple devices, Rexton uses the Made for iPhone (MFi) protocol for direct streaming.

On Android devices, Rexton uses ASHA (Audio Streaming for Hearing Aids) if supported by the phone manufacturer.
Please note that not all Android phones support ASHA. Whether a device works with ASHA depends on how the manufacturer has implemented it.
To see which Android phones are compatible with ASHA and have been tested, please visit the Device Compatibility page.

Some Rexton hearing aids that have the appropriate firmware are compatible with LE Audio, which uses the LC3 codec for streaming.

LE Audio offers benefits such as improved sound quality and reduced battery consumption.

To find out whether your specific hearing aid model supports LE Audio and the LC3 codec, contact your hearing care professional or refer to your device's firmware version.

You can use TV Sound, Smart Mic, and Smart Transmitter 2.4 to stream audio to your Rexton hearing aids. These accessories provide a reliable way to hear audio from TVs, mobile devices, and other external sources directly through your hearing aids.

Rexton hearing aids may be discoverable by some third-party devices because they use Bluetooth Low Energy for app control, which these devices might detect. However, audio will not stream unless the device supports one of the specific protocols Rexton hearing aids use for audio transmission: MFi (Made for iPhone), ASHA (Audio Streaming for Hearing Aids), or LE Audio (only supported by some models).

Bluetooth-enabled Rexton hearing aids with the correct firmware may also pair with select Apple computers that support the MFi protocol. For more information on compatible macOS devices, check Apple’s support documentation.

If a third-party device supports the LE Audio protocol and can pair with Rexton hearing aids that run the appropriate firmware, streaming may work. This depends on both the hearing aid model and the capabilities of the device.

The most effective way to stream sound from your TV to your Rexton hearing aids is by using the TV Sound accessory.

When your Rexton hearing aids are connected via Settings > Accessibility > Hearing Devices on an iPhone, you’ll see a variety of options to customize how they interact with your phone:

  • Play Ringtones: Choose whether your iPhone ringtones play through your hearing aids
  • Play System Sounds: Control if system sounds (like alerts, key clicks, or lock sounds) stream to your hearing aids when the phone is not in Silent Mode
  • Audio Routing: Set whether call and media audio automatically route to your hearing aids or stay on the phone
  • Control Nearby Devices: Allows other iOS devices using the same Apple ID to control your hearing aids. For the best experience, we recommend turning this off to avoid interference
  • Audio Handoff: Lets one Apple device take over the streaming connection from another automatically. To prevent interruptions, it's best to keep this off
  • Hearing Aid Compatibility: Only relevant if you're using the phone traditionally (held to the ear). This setting doesn’t apply if audio is being streamed or on speake

When you tap on your hearing aids (listed as "Connected"), additional settings appear:

  • Stream to right/left device: Turn on or off audio streaming to either hearing aid
  • Adjust Independently: Lets you control the microphone levels for each hearing aid separately
  • Microphone Level sliders: Adjust how much ambient sound is amplified
  • Presets: Displays the listening programs your hearing care professional has added
  • Start Live Listen: Use your iPhone’s microphone as a remote mic. Great for conversations in noisy places. Volume can be adjusted using your phone's side buttons
  • Forget This Device: Unpair your hearing aids from the phone

Yes, you can have more than one iOS device paired to your Rexton hearing aids. If the devices share the same Apple ID, the pairing may even sync automatically through iCloud.

However, streaming can only happen from one device at a time.

To switch:

  • First, turn off Bluetooth on the device currently connected
  • Then, turn on Bluetooth on the second device
  • The hearing aids should automatically connect to the new device
  • Follow the same steps whenever you want to switch between devices

How to pair your hearing aids

Pairing of Rexton hearing aids to an iPhone
Pairing of Rexton hearing aids to an Android phone
Pairing your hearing aids to the TV Sound
Pairing your hearing aids to the Smart Mic
Pairing a Smart Key remote control
How to make hands-free phone calls

Troubleshooting

First, check that your hearing aids aren’t blocked by earwax or debris. This could stop streamed audio from coming through, even if the hearing aids amplify environmental sound normally.
If needed, follow the unpairing and repairing instructions provided earlier in the guide.

  • Try force closing the Rexton App:
    - On iPhone: Use the app switcher gesture to swipe up and close the app. If you're unsure how, see Apple’s step-by-step guide here: https://support.apple.com/en-us/109359
    - On Android: Go to Settings > Apps > Rexton App > Force Stop
  • Reopen the app and check whether the Bluetooth connection reestablishes. If not, restart the phone and try again.

 

If the issue continues, reset the app:

  • Open the Rexton App
  • Tap the three-line menu icon (top left)
  • Go to Settings > App Settings > Set up the app
  • Tap OK when prompted (this won’t affect your hearing aid settings)
  • Choose the Bluetooth setup option and follow the on-screen instructions

If the app still can’t find your hearing aids, unpair and re-pair them in your phone’s Bluetooth menu (see pairing instructions above), then return to the app to retry setup.

 

Still not working? Uninstall and reinstall the app. After reinstalling, reopen it, accept permissions and terms, and go through the Bluetooth setup again.

If you've turned your phone's streaming volume to 100% and the audio still sounds low, start by making sure your hearing aid domes or tips are clean. Blocked output can affect both streaming and environmental sound.

If everything looks fine and sound is still too low, consult your hearing care professional. They can increase the default streaming gain in the hearing aid settings, so you won’t need to rely solely on your phone's volume. They can also fine-tune frequencies to improve streaming clarity.

iPhone:

  • Go to Settings > Sounds & Haptics and increase the Ringer and Alerts slider.

 

Android – ASHA streaming:

  • Go to Settings > Sounds and vibration > Volume
  • Make sure both the Media and Ringtone sliders are raised
  • If the phone is on Sound mode, ringtone will stream to the hearing aids
  • If on Vibrate, the ringtone won't stream
  • If on Mute, ringtone volume is controlled by the Media slider and may only play through the phone’s speaker

 

Android – LE Audio streaming:

  • The ringtone volume is tied to the in-call volume (how loud you hear the caller). During a call, use the side buttons to raise the in-call volume. This will boost the ringtone volume for future calls.
  • Also make sure the Ringtone slider in the Volume settings isn’t set too low, as this could mute the ringtone stream.

FAQs

Currently, Rexton hearing aids do not support Auracast. While some hearing aids now support Low Energy Audio, Auracast requires additional hardware and software components. We continue to monitor industry trends and public infrastructure support. As adoption grows, we plan to introduce Auracast-ready hearing solutions in the future.

You can change the audio routing using your phone’s native settings:

  • iPhone: Open the Control Center, tap the AirPlay icon in the media controls, then select iPhone to switch the audio to the phone’s speakers.
  • Android: Swipe down to open Quick Settings, then tap Media Output (if available) to select a different audio destination. If not shown, use the media app's notification to change the output.
  • To return audio to your hearing aids, follow the same steps and reselect them as the output.

Try using the Balance slider in the Rexton App while streaming. Move it toward Sharp to enhance treble, or Soft to reduce it. For more detailed sound adjustments, contact your hearing care provider.

If you’re streaming via LE Audio  or Classic Bluetooth, system-level audio settings or EQ apps on your phone may also influence sound quality.

Yes, certain Rexton hearing aids allow you to answer or end calls by pressing a button or using a tapping gesture on the hearing aids. This depends on the phone and hearing aid compatibility.

On iPhones, the feature works with supported Rexton hearing aids and newer phone models.

On Android devices, this function is available when using hearing aids with compatible firmware and phones that support LE Audio.

If your hearing aids and phone support it, you’ll be able to manage calls directly without needing to touch your phone. If unsure, check with your hearing care professional for compatibility.

It depends on whether your hearing aids support HandsFree calling. If they do, your voice will be picked up by the hearing aid microphones, allowing you to keep your phone in your pocket during a call.

If HandsFree is not supported, the phone’s microphone will be used instead. In that case, it’s best to keep the phone in front of you and close to your mouth, similar to using speakerphone, so the other person can hear you clearly.

For details on whether this feature is available with your specific hearing aids and phone, check with your hearing care professional.

This may happen if your hearing aids are using HandsFree mode and picking up background sounds through their microphones. Here’s how to reduce it:

 

iPhone:

If HandsFree is active, you can disable Mic Input in the MFi menu. Triple-click the Side button to open it, tap on your hearing aids, and toggle Mic Input off. This routes your voice through the iPhone microphone instead, which better filters background noise.

You can also enable Voice Isolation during a call (iOS 15 or newer). Swipe down to open Control Center, tap the orange mic icon, and choose Voice Isolation to filter out surrounding noise.

 

Android:

If you're using a phone that supports LE Audio, switching back to the ASHA protocol may help. This moves voice pickup back to the phone’s mic. Keep the phone near your mouth like on speaker mode.

To disable LE Audio, go to Bluetooth Settings, tap the gear icon next to your hearing aids, and turn off the LE Audio option.

iPhone (general):

Go to Settings > Accessibility > Hearing Devices > Call Audio Routing

You can set either Call Audio or Media Audio to Never Hearing Devices. That type of sound won’t route to your hearing aids by default, but can still be selected manually during use.

 

Android (general):

Android doesn’t let you set a default, but you can switch the audio route during calls or media using the call screen or pull-down media control panel.

No, voice assistants like Siri, Bixby, or Google Assistant can’t be triggered by pressing or tapping the hearing aids. Use your phone’s mic or on-screen controls to activate them.
No, playback controls (like pause/play) must be done directly on your phone or through the app you’re streaming from.

Need more support? Try out these sections.

Rexton icon for smartphone compatibility

REXTON APP

Rexton icon for devices

DEVICE COMPATIBILITY

Rexton icon for smart mic accessory

ACCESSORIES

Stay connected with your Rexton hearing aids

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Rexton Assist uses artificial intelligence to learn your preferences and automatically fine-tune your hearing aids. It helps you stay confident in any listening situation by offering personalized support based on your feedback
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With Rexton TeleCare, you can stay connected to your hearing care professional remotely. Receive adjustments, advice, and support through the app without needing to visit the clinic.
TV Sound - streaming accessory for hearing aids

TV Sound

Transmits high-quality television sound straight to the hearing aids, to enhance to enhance the television-watching experience.
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