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Osia® Smart App: Frequently Asked Questions

Osia Smart App is compatible with the Osia 2 Sound Processor.

For an up-to-date list of compatible iPhone and Apple Watch models and iOS versions, please refer to

Yes, in most cases. The app is verified on the iOS available at time of launch. If a newer iOS version is reported to cause any issues, we will aim to update the app and resolve the issue as soon as possible.

To minimise the risk of problems with the pairing, connection or app when updating the iOS, we recommend that you either:

  • log out from the app, unpair the sound processor and uninstall the app prior to updating the iOS, or
  • log out from the app, unpair the sound processor, uninstall the app then restart your iPhone after you have updated the iOS.

Afterwards, start by pairing the sound processor, then download and install the app (see further instructions below) and log in again using the same details as before.

Yes, you can pair up to 5 iPhones to your sound processor(s) and have the app installed on all of them. However, you can only connect one iPhone at a time to your sound processor(s).

The app provides on-screen instructions on how to resolve issues with connection. Make sure are using the latest iOS (unless otherwise communicated from Cochlear on We recommend that you, prior to updating the iOS, un-pair your sound processor and then pair again after the update.

Additionally, if you are streaming audio from your iPhone to the sound processor when the app is started, you can experience problems connecting. If the app is running in the background when audio is being streamed, this should not be an issue.

The connection between your sound processor and iPhone can be lost if the sound processor battery level is low or if the distance between the iPhone and sound processor is too great or blocked.

Make sure the sound processor has sufficent battery and is within range of the mobile device. Make sure Bluetooth is turned on and then restart the app. The app should automatically reconnect.

When connection is lost, an option to 'Start troubleshooting' will be presented. Tap it to start Guided Troubleshooting to get further assistance.

It is difficult to give an exact distance since this depends on factors such as sound processor battery level, any solid objects in-between, and the environment you are in.

The battery level on your sound processor may be too low to support the connection. Try to replace the battery. The app will reconnect automatically.

When connection is lost, an option to 'Start troubleshooting' will be presented. Tap it to start Guided Troubleshooting to get further assistance.

If you continue to experience problems, you could try to remove the paired sound processor from your iPhone, and then pair it again. See more under "How do I remove a previously paired sound processor"?

When you stream sound from your iPhone, the sound processors automatically move to a streaming program. In order to go back to a hearing program, stop the streaming operation.

You may have lost connection to your sound processor. When connection is re-established you can change program again.

The Apple Watch interface offers quick access to core functions such as changing program or adjusting volume. Simply swipe left or right to choose a program, select a Favourite or activate streaming from wireless accessories. Rotate the crown to adjust volume up and down, or mute by setting volume to 0.

The Apple Watch will also display notifications such as sound processor battery warnings.

The battery indicator in the app will show the current power level of your sound processor battery as full or low. Low battery strength means that wireless operation is close to interruption and that batteries should be changed soon.

The Osia 2 Sound Processor use a zinc-air battery, which provides almost the same level of power until it is nearly empty and then loses power very rapidly. It is therefore difficult for the app to display an accurate battery level until the sound processor provides a battery warning.

No. The app does not significantly impact the consumption of the sound processor battery.

Running the app will take up some of the iPhone battery, similar to other apps. In order to use the ‘Locate device’ functionality of the app, GPS needs to be turned on. To save battery, you can turn off the GPS on your iPhone.

Yes. If you pair your mobile device with your child’s sound processor you can control and monitor it from a distance, but you need to be within range. This allows you to see battery status, adjust volume and change program without needing to touch the sound processor.