Audio Fix / setup help

iPhone: grant a specifically denied audio control-app discovery permission

Review the named installed control app’s known-denied Bluetooth discovery permission. Audio can already work without it.

Manufacturer-documented Reviewed 2026-11-09 · Revision 2

Follow these checks in Audio Fix →

When this guide applies

The selected exact listed model already plays iPhone Bluetooth audio. Its official installed companion app failed discovery after you denied Bluetooth privacy access and is listed with permission off. No call, control write or firmware transfer is active. This checks permission readiness without launching the companion app.

Connection scope: Bluetooth. Symptom: The control app cannot find my device.

This is a documented check, not a diagnosis of your equipment. The model name does not confirm the selected input, mode, software or connected partner.

If your exact model or a required setting is unknown, use the “I don’t know” branch below. Do not apply a similarly named model’s instructions.

Checks and possible outcomes

Start at scope. Follow the link that matches what you actually observe. Alternative branches are not a single sequence of actions.

scope

Confirm the exact denied app and model

The selected exact listed model already plays iPhone Bluetooth audio. Its official installed companion app failed discovery after you denied Bluetooth privacy access and is listed with permission off. No call, control write or firmware transfer is active. This checks permission readiness without launching the companion app.

Look for: Confirm the stated actual state.

  • Manufacturer-documented TOZO NC9 Pro — official tozo nc9pro app ↗Smart AI Chat / TOZO App, lines195–208 — The exact 2026 NC9Pro has supported TOZO App functions. This establishes the correct companion app, not an invented pairing or update gesture.Exact TOZO NC9 Pro. · Source checked 2026-11-09
  • Manufacturer-documented TOZO NC9 Pro — official iphone app bluetooth privacy ↗Allow or revoke app Bluetooth access — iPhone Settings > Privacy & Security > Bluetooth allows review and change of a requested app Bluetooth permission. Many ordinary Bluetooth audio uses do not require that app permission.Exact TOZO NC9 Pro. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Middleton II — official marshall app support ↗Compatible apps166–170 and Common Questions368–370 — The exact speaker is supported by Marshall Bluetooth app; ordinary speaker playback can be used separately from its control application.Exact Marshall Middleton II. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Middleton II — official iphone app bluetooth privacy ↗Allow or revoke app Bluetooth access — iPhone Settings > Privacy & Security > Bluetooth allows review and change of a requested app Bluetooth permission. Many ordinary Bluetooth audio uses do not require that app permission.Exact Marshall Middleton II. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Emberton III — official marshall app support ↗How to use the app, lines9–15 — The exact speaker is supported by Marshall Bluetooth app; ordinary speaker playback can be used separately from its control application.Exact Marshall Emberton III. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Emberton III — official iphone app bluetooth privacy ↗Allow or revoke app Bluetooth access — iPhone Settings > Privacy & Security > Bluetooth allows review and change of a requested app Bluetooth permission. Many ordinary Bluetooth audio uses do not require that app permission.Exact Marshall Emberton III. · Source checked 2026-11-09
  • Manufacturer-documented SoundPEATS H3 — official h3 bluetooth media ↗H3 product features and PeatsAudio section — Exact H3 is a Bluetooth media/call accessory and uses PeatsAudio for product controls. This source establishes the model role, not a Windows app mute cure.Exact SoundPEATS H3. · Source checked 2026-11-09
  • Manufacturer-documented SoundPEATS H3 — official app privacy access only ↗App Bluetooth privacy access — iPhone can grant or revoke Bluetooth discovery permission separately for each requesting app; ordinary audio can work without this access.Exact SoundPEATS H3. · Source checked 2026-11-09
  • Manufacturer-documented Soundcore Motion 300 — official motion300 audio app role ↗Motion300 Bluetooth codecs and soundcore app — Exact Motion300 supports Bluetooth media and the soundcore app. Its FAQ describes manual firmware-update initiation; this permission check never selects Update Firmware.Exact Soundcore Motion 300. · Source checked 2026-11-09
  • Manufacturer-documented Soundcore Motion 300 — official app privacy access only ↗App Bluetooth privacy access — iPhone can grant or revoke Bluetooth discovery permission separately for each requesting app; ordinary audio can work without this access.Exact Soundcore Motion 300. · Source checked 2026-11-09
  • Manufacturer-documented Audio-Technica ATH-M50xBT2 — official m50xbt2 connect scope ↗App for smartphones, printed19; wired connection limitation — ATH-M50xBT2 uses the official CONNECT app for controls and firmware, while its passive cable connection is separate. The current check uses its confirmed active Bluetooth media session.Exact Audio-Technica ATH-M50xBT2. · Source checked 2026-11-09
  • Manufacturer-documented Audio-Technica ATH-M50xBT2 — official app privacy access only ↗App Bluetooth privacy access — iPhone can grant or revoke Bluetooth discovery permission separately for each requesting app; ordinary audio can work without this access.Exact Audio-Technica ATH-M50xBT2. · Source checked 2026-11-09

a1

Open Bluetooth privacy permissions

Open iPhone Settings > Privacy & Security > Bluetooth. Leave the phone-wide radio on.

Look for: Observe the named permission only.

  • Manufacturer-documented TOZO NC9 Pro — official tozo nc9pro app ↗Smart AI Chat / TOZO App, lines195–208 — The exact 2026 NC9Pro has supported TOZO App functions. This establishes the correct companion app, not an invented pairing or update gesture.Exact TOZO NC9 Pro. · Source checked 2026-11-09
  • Manufacturer-documented TOZO NC9 Pro — official iphone app bluetooth privacy ↗Allow or revoke app Bluetooth access — iPhone Settings > Privacy & Security > Bluetooth allows review and change of a requested app Bluetooth permission. Many ordinary Bluetooth audio uses do not require that app permission.Exact TOZO NC9 Pro. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Middleton II — official marshall app support ↗Compatible apps166–170 and Common Questions368–370 — The exact speaker is supported by Marshall Bluetooth app; ordinary speaker playback can be used separately from its control application.Exact Marshall Middleton II. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Middleton II — official iphone app bluetooth privacy ↗Allow or revoke app Bluetooth access — iPhone Settings > Privacy & Security > Bluetooth allows review and change of a requested app Bluetooth permission. Many ordinary Bluetooth audio uses do not require that app permission.Exact Marshall Middleton II. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Emberton III — official marshall app support ↗How to use the app, lines9–15 — The exact speaker is supported by Marshall Bluetooth app; ordinary speaker playback can be used separately from its control application.Exact Marshall Emberton III. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Emberton III — official iphone app bluetooth privacy ↗Allow or revoke app Bluetooth access — iPhone Settings > Privacy & Security > Bluetooth allows review and change of a requested app Bluetooth permission. Many ordinary Bluetooth audio uses do not require that app permission.Exact Marshall Emberton III. · Source checked 2026-11-09
  • Manufacturer-documented SoundPEATS H3 — official h3 bluetooth media ↗H3 product features and PeatsAudio section — Exact H3 is a Bluetooth media/call accessory and uses PeatsAudio for product controls. This source establishes the model role, not a Windows app mute cure.Exact SoundPEATS H3. · Source checked 2026-11-09
  • Manufacturer-documented SoundPEATS H3 — official app privacy access only ↗App Bluetooth privacy access — iPhone can grant or revoke Bluetooth discovery permission separately for each requesting app; ordinary audio can work without this access.Exact SoundPEATS H3. · Source checked 2026-11-09
  • Manufacturer-documented Soundcore Motion 300 — official motion300 audio app role ↗Motion300 Bluetooth codecs and soundcore app — Exact Motion300 supports Bluetooth media and the soundcore app. Its FAQ describes manual firmware-update initiation; this permission check never selects Update Firmware.Exact Soundcore Motion 300. · Source checked 2026-11-09
  • Manufacturer-documented Soundcore Motion 300 — official app privacy access only ↗App Bluetooth privacy access — iPhone can grant or revoke Bluetooth discovery permission separately for each requesting app; ordinary audio can work without this access.Exact Soundcore Motion 300. · Source checked 2026-11-09
  • Manufacturer-documented Audio-Technica ATH-M50xBT2 — official m50xbt2 connect scope ↗App for smartphones, printed19; wired connection limitation — ATH-M50xBT2 uses the official CONNECT app for controls and firmware, while its passive cable connection is separate. The current check uses its confirmed active Bluetooth media session.Exact Audio-Technica ATH-M50xBT2. · Source checked 2026-11-09
  • Manufacturer-documented Audio-Technica ATH-M50xBT2 — official app privacy access only ↗App Bluetooth privacy access — iPhone can grant or revoke Bluetooth discovery permission separately for each requesting app; ordinary audio can work without this access.Exact Audio-Technica ATH-M50xBT2. · Source checked 2026-11-09

app

Is the exact installed app listed with access off?

Use TOZO for the touchscreen NC9Pro; Marshall Bluetooth for MiddletonII or EmbertonIII; PeatsAudio for H3; soundcore for Motion300; Audio-Technica CONNECT for ATH-M50xBT2. Is that exact app listed with Bluetooth access currently off? JBL Headphones is the exact companion app for Tour One M3.

Look for: Confirm the stated actual state.

  • Manufacturer-documented TOZO NC9 Pro — official tozo nc9pro app ↗Smart AI Chat / TOZO App, lines195–208 — The exact 2026 NC9Pro has supported TOZO App functions. This establishes the correct companion app, not an invented pairing or update gesture.Exact TOZO NC9 Pro. · Source checked 2026-11-09
  • Manufacturer-documented TOZO NC9 Pro — official iphone app bluetooth privacy ↗Allow or revoke app Bluetooth access — iPhone Settings > Privacy & Security > Bluetooth allows review and change of a requested app Bluetooth permission. Many ordinary Bluetooth audio uses do not require that app permission.Exact TOZO NC9 Pro. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Middleton II — official marshall app support ↗Compatible apps166–170 and Common Questions368–370 — The exact speaker is supported by Marshall Bluetooth app; ordinary speaker playback can be used separately from its control application.Exact Marshall Middleton II. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Middleton II — official iphone app bluetooth privacy ↗Allow or revoke app Bluetooth access — iPhone Settings > Privacy & Security > Bluetooth allows review and change of a requested app Bluetooth permission. Many ordinary Bluetooth audio uses do not require that app permission.Exact Marshall Middleton II. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Emberton III — official marshall app support ↗How to use the app, lines9–15 — The exact speaker is supported by Marshall Bluetooth app; ordinary speaker playback can be used separately from its control application.Exact Marshall Emberton III. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Emberton III — official iphone app bluetooth privacy ↗Allow or revoke app Bluetooth access — iPhone Settings > Privacy & Security > Bluetooth allows review and change of a requested app Bluetooth permission. Many ordinary Bluetooth audio uses do not require that app permission.Exact Marshall Emberton III. · Source checked 2026-11-09
  • Manufacturer-documented SoundPEATS H3 — official h3 bluetooth media ↗H3 product features and PeatsAudio section — Exact H3 is a Bluetooth media/call accessory and uses PeatsAudio for product controls. This source establishes the model role, not a Windows app mute cure.Exact SoundPEATS H3. · Source checked 2026-11-09
  • Manufacturer-documented SoundPEATS H3 — official app privacy access only ↗App Bluetooth privacy access — iPhone can grant or revoke Bluetooth discovery permission separately for each requesting app; ordinary audio can work without this access.Exact SoundPEATS H3. · Source checked 2026-11-09
  • Manufacturer-documented Soundcore Motion 300 — official motion300 audio app role ↗Motion300 Bluetooth codecs and soundcore app — Exact Motion300 supports Bluetooth media and the soundcore app. Its FAQ describes manual firmware-update initiation; this permission check never selects Update Firmware.Exact Soundcore Motion 300. · Source checked 2026-11-09
  • Manufacturer-documented Soundcore Motion 300 — official app privacy access only ↗App Bluetooth privacy access — iPhone can grant or revoke Bluetooth discovery permission separately for each requesting app; ordinary audio can work without this access.Exact Soundcore Motion 300. · Source checked 2026-11-09
  • Manufacturer-documented Audio-Technica ATH-M50xBT2 — official m50xbt2 connect scope ↗App for smartphones, printed19; wired connection limitation — ATH-M50xBT2 uses the official CONNECT app for controls and firmware, while its passive cable connection is separate. The current check uses its confirmed active Bluetooth media session.Exact Audio-Technica ATH-M50xBT2. · Source checked 2026-11-09
  • Manufacturer-documented Audio-Technica ATH-M50xBT2 — official app privacy access only ↗App Bluetooth privacy access — iPhone can grant or revoke Bluetooth discovery permission separately for each requesting app; ordinary audio can work without this access.Exact Audio-Technica ATH-M50xBT2. · Source checked 2026-11-09

a3

Allow only the named app

Turn on Bluetooth access for that named app only. Do not launch the app, approve firmware or alter other app permissions.

Look for: Observe the named permission only.

  • Manufacturer-documented TOZO NC9 Pro — official tozo nc9pro app ↗Smart AI Chat / TOZO App, lines195–208 — The exact 2026 NC9Pro has supported TOZO App functions. This establishes the correct companion app, not an invented pairing or update gesture.Exact TOZO NC9 Pro. · Source checked 2026-11-09
  • Manufacturer-documented TOZO NC9 Pro — official iphone app bluetooth privacy ↗Allow or revoke app Bluetooth access — iPhone Settings > Privacy & Security > Bluetooth allows review and change of a requested app Bluetooth permission. Many ordinary Bluetooth audio uses do not require that app permission.Exact TOZO NC9 Pro. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Middleton II — official marshall app support ↗Compatible apps166–170 and Common Questions368–370 — The exact speaker is supported by Marshall Bluetooth app; ordinary speaker playback can be used separately from its control application.Exact Marshall Middleton II. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Middleton II — official iphone app bluetooth privacy ↗Allow or revoke app Bluetooth access — iPhone Settings > Privacy & Security > Bluetooth allows review and change of a requested app Bluetooth permission. Many ordinary Bluetooth audio uses do not require that app permission.Exact Marshall Middleton II. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Emberton III — official marshall app support ↗How to use the app, lines9–15 — The exact speaker is supported by Marshall Bluetooth app; ordinary speaker playback can be used separately from its control application.Exact Marshall Emberton III. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Emberton III — official iphone app bluetooth privacy ↗Allow or revoke app Bluetooth access — iPhone Settings > Privacy & Security > Bluetooth allows review and change of a requested app Bluetooth permission. Many ordinary Bluetooth audio uses do not require that app permission.Exact Marshall Emberton III. · Source checked 2026-11-09
  • Manufacturer-documented SoundPEATS H3 — official h3 bluetooth media ↗H3 product features and PeatsAudio section — Exact H3 is a Bluetooth media/call accessory and uses PeatsAudio for product controls. This source establishes the model role, not a Windows app mute cure.Exact SoundPEATS H3. · Source checked 2026-11-09
  • Manufacturer-documented SoundPEATS H3 — official app privacy access only ↗App Bluetooth privacy access — iPhone can grant or revoke Bluetooth discovery permission separately for each requesting app; ordinary audio can work without this access.Exact SoundPEATS H3. · Source checked 2026-11-09
  • Manufacturer-documented Soundcore Motion 300 — official motion300 audio app role ↗Motion300 Bluetooth codecs and soundcore app — Exact Motion300 supports Bluetooth media and the soundcore app. Its FAQ describes manual firmware-update initiation; this permission check never selects Update Firmware.Exact Soundcore Motion 300. · Source checked 2026-11-09
  • Manufacturer-documented Soundcore Motion 300 — official app privacy access only ↗App Bluetooth privacy access — iPhone can grant or revoke Bluetooth discovery permission separately for each requesting app; ordinary audio can work without this access.Exact Soundcore Motion 300. · Source checked 2026-11-09
  • Manufacturer-documented Audio-Technica ATH-M50xBT2 — official m50xbt2 connect scope ↗App for smartphones, printed19; wired connection limitation — ATH-M50xBT2 uses the official CONNECT app for controls and firmware, while its passive cable connection is separate. The current check uses its confirmed active Bluetooth media session.Exact Audio-Technica ATH-M50xBT2. · Source checked 2026-11-09
  • Manufacturer-documented Audio-Technica ATH-M50xBT2 — official app privacy access only ↗App Bluetooth privacy access — iPhone can grant or revoke Bluetooth discovery permission separately for each requesting app; ordinary audio can work without this access.Exact Audio-Technica ATH-M50xBT2. · Source checked 2026-11-09

observe

Is the named app permission now on?

Permission on confirms discovery readiness only, not an app connection or a firmware result. Can you confirm the exact app permission is on?

Look for: Confirm the stated actual state.

  • Manufacturer-documented TOZO NC9 Pro — official tozo nc9pro app ↗Smart AI Chat / TOZO App, lines195–208 — The exact 2026 NC9Pro has supported TOZO App functions. This establishes the correct companion app, not an invented pairing or update gesture.Exact TOZO NC9 Pro. · Source checked 2026-11-09
  • Manufacturer-documented TOZO NC9 Pro — official iphone app bluetooth privacy ↗Allow or revoke app Bluetooth access — iPhone Settings > Privacy & Security > Bluetooth allows review and change of a requested app Bluetooth permission. Many ordinary Bluetooth audio uses do not require that app permission.Exact TOZO NC9 Pro. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Middleton II — official marshall app support ↗Compatible apps166–170 and Common Questions368–370 — The exact speaker is supported by Marshall Bluetooth app; ordinary speaker playback can be used separately from its control application.Exact Marshall Middleton II. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Middleton II — official iphone app bluetooth privacy ↗Allow or revoke app Bluetooth access — iPhone Settings > Privacy & Security > Bluetooth allows review and change of a requested app Bluetooth permission. Many ordinary Bluetooth audio uses do not require that app permission.Exact Marshall Middleton II. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Emberton III — official marshall app support ↗How to use the app, lines9–15 — The exact speaker is supported by Marshall Bluetooth app; ordinary speaker playback can be used separately from its control application.Exact Marshall Emberton III. · Source checked 2026-11-09
  • Manufacturer-documented Marshall Emberton III — official iphone app bluetooth privacy ↗Allow or revoke app Bluetooth access — iPhone Settings > Privacy & Security > Bluetooth allows review and change of a requested app Bluetooth permission. Many ordinary Bluetooth audio uses do not require that app permission.Exact Marshall Emberton III. · Source checked 2026-11-09
  • Manufacturer-documented SoundPEATS H3 — official h3 bluetooth media ↗H3 product features and PeatsAudio section — Exact H3 is a Bluetooth media/call accessory and uses PeatsAudio for product controls. This source establishes the model role, not a Windows app mute cure.Exact SoundPEATS H3. · Source checked 2026-11-09
  • Manufacturer-documented SoundPEATS H3 — official app privacy access only ↗App Bluetooth privacy access — iPhone can grant or revoke Bluetooth discovery permission separately for each requesting app; ordinary audio can work without this access.Exact SoundPEATS H3. · Source checked 2026-11-09
  • Manufacturer-documented Soundcore Motion 300 — official motion300 audio app role ↗Motion300 Bluetooth codecs and soundcore app — Exact Motion300 supports Bluetooth media and the soundcore app. Its FAQ describes manual firmware-update initiation; this permission check never selects Update Firmware.Exact Soundcore Motion 300. · Source checked 2026-11-09
  • Manufacturer-documented Soundcore Motion 300 — official app privacy access only ↗App Bluetooth privacy access — iPhone can grant or revoke Bluetooth discovery permission separately for each requesting app; ordinary audio can work without this access.Exact Soundcore Motion 300. · Source checked 2026-11-09
  • Manufacturer-documented Audio-Technica ATH-M50xBT2 — official m50xbt2 connect scope ↗App for smartphones, printed19; wired connection limitation — ATH-M50xBT2 uses the official CONNECT app for controls and firmware, while its passive cable connection is separate. The current check uses its confirmed active Bluetooth media session.Exact Audio-Technica ATH-M50xBT2. · Source checked 2026-11-09
  • Manufacturer-documented Audio-Technica ATH-M50xBT2 — official app privacy access only ↗App Bluetooth privacy access — iPhone can grant or revoke Bluetooth discovery permission separately for each requesting app; ordinary audio can work without this access.Exact Audio-Technica ATH-M50xBT2. · Source checked 2026-11-09

Possible result

More information is required

An unknown state is not a diagnosis. Record the last visible indication and consult the exact model instructions.

insufficient data

Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

    Possible result

    Continue with source and model support

    Keep the source, connection and last observation. Do not reset, open equipment or change full-scale output to compensate for an unconfirmed result.

    next support

    Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

      Possible result

      Checks completed

      The requested observation was confirmed in this setup. It does not establish a hardware repair or guarantee another source behaves the same.

      steps completed

      Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

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