Marvel CI Product Support

Frequently Asked Questions


Using Marvel CI Sound Processors and Accessories


How do I remove and attach the M Battery from my Marvel CI sound processor?

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How do I charge the M Batteries for my Marvel CI sound processor?

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How long will my batteries last?

Expected battery life is displayed in the table below. Battery life may vary based on your Marvel CI sound processor settings, duration of wireless streaming, and age of your battery. To prevent excessive battery drain, please ensure you remove the batteries fully from the sound processor when not in use.

  Small Medium Large Standard M Waterproof Battery M Zn-Air Battery
mAh 90 150 220 160 225 N/A
Expected Battery Life
(with HiRes Optima strategy)
≥9 hours ≥16 hours ≥23 hours* ≥16 hours ≥18 hours ≥16 hours

*Estimate of battery life is extrapolated based on battery life of Medium Battery and capacity of the Large Battery.


How long will it take to charge my M Batteries?

M Batteries should charge fully in approximately 5 to 7 hours.


Can M Batteries be shipped via air freight or packed in luggage?

Marvel CI uses Li-Ion batteries that are UN38.3-certified. This certification means that Marvel CI rechargeable batteries can be transported by air and placed in checked luggage.


How do I attach and remove the Slim HP from my Marvel CI sound processor?

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How do I remove and attach the Slim HP colour cap?

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How do I change the M Earhook on my Marvel CI sound processor?

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How do I use the multifunction button on my Marvel CI sound processor?

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How do I assemble the M Waterproof Battery?

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The M Waterproof Battery has an IP rating of 68. What does IP68 mean?

IP68 means the product is dust-tight and functional after immersion in 1 meter of water for 30 minutes. AB has tested the M Waterproof Battery beyond these minimum requirements by immersing the product in 3 meters of water and by using various types of water.


Do I need to cover or plug the micro-USB port on my M Waterproof Battery?

No, the micro USB port in the M Waterproof Battery is designed to be left unplugged during use in water.


Maintenance and Troubleshooting for Marvel CI Sound Processors and Accessories


How do I clean my Marvel CI sound processor?

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How do I replace the cover on the M T-Mic?

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Note: The cover for the M T-Mic is the same as the cover for the T-Mic 2 used with the Naída CI Q90 sound processor.


With Marvel CI, how can I tell if the headpiece is not locked to the implant?

Loss of lock can be indicated in several different ways:

  • A flashing red LED on the sound processor
  • The device check screen within the AB Remote mobile app
  • When the M Waterproof Battery is in use, an audible alarm may sound (ask your cochlear implant professional if this functionality is enabled in your Marvel CI sound processor)

How do I replace the CeruShield in my M Acoustic Earhook?

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How often should I replace the CeruShield in my M Acoustic Earhook?

The CeruShield should be replaced regularly, approximately every 4 to 8 weeks, or sooner if debris is noted or if sound quality changes.


How can I confirm that my Marvel CI sound processor is working?

There are several ways to verify that your Marvel CI sound processor is functional.

The AB Remote app features a device check screen that allows you to verify functionality of your Marvel CI sound processor. Visit the App Store (Apple devices) or Google Play (Android devices) to download AB Remote mobile app.

You can also listen to the Marvel CI sound processor with the M Listening Check.


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Connectivity Information for Marvel CI


How do I know if my Bluetooth-enabled smartphone is compatible with Marvel CI or AB Remote mobile app?

Visit our Bluetooth and Mobile App Compatibility page to learn more.


Can I connect Marvel CI to an Android Phone?

Yes, you can connect to any Android phone with Bluetooth 2.1 or newer.

  1. Go to the Android phone’s home screen and tap on the Settings icon.
  2. In the Settings menu, tap on the Bluetooth icon.
  3. Tap on the slider button to turn Bluetooth on.
  4. Connect the M Battery to Marvel CI to start the 3-minute pairing window.
  5. On the Android phone, you will now see a message, Available Devices.
  6. The name of your Marvel CI will appear on the screen with a telephone icon next to it. Tap on it to select.
  7. A connection beep will be heard in the paired Marvel CI.
  8. Your Android phone is now connected to Marvel CI.

Can I connect Marvel CI to an iPhone?

Yes, you can connect to any iPhone with Bluetooth 2.1 or newer.

  1. Go to your iPhone home screen and tap on the Settings icon.
  2. In the Settings menu, tap on the Bluetooth icon.
  3. Tap on the slider button next to Bluetooth to turn Bluetooth on.
  4. Connect the M Battery to Marvel CI to start the three-minute pairing window. 
  5. After several seconds, the customised name of your Marvel CI will appear on the iPhone screen. Tap on it to select.
  6. You will now see a message, Bluetooth Pairing Request Click Pair.
  7. A connection beep will be heard in the paired Marvel CI.
  8. Your iPhone is now connected to Marvel CI.

How many devices can I pair to my Marvel CI sound processor?

You can pair up to 9 different devices to Marvel CI:

  • 2 Bluetooth Classic devices (e.g., smartphones, tablets, laptops)
  • 2 Bluetooth Low Energy devices (e.g., AB Remote mobile app, Phonak RemoteControl)
  • 2 Phonak TV Connectors
  • 1 Phonak PartnerMic
  • 1 Roger 02 microphone
  • 1 Roger 03 microphone

How do I switch between one Bluetooth device connected to Marvel CI to another device?

  1. Switch off Bluetooth on the device that is connected at the moment.
  2. Ensure that Bluetooth wireless technology is enabled on the device that you are going to connect to.
  3. Slide off the M Battery on Marvel CI and slide it back on. 
  4. Marvel CI will now connect to the other Bluetooth device.

Can I connect a Bluetooth computer to Marvel CI?

Yes, you can connect to any computer equipped with Bluetooth.

  1. Go into the Bluetooth settings menu of your computer.
  2. Connect the M Battery to Marvel CI to start the three-minute pairing window. 
  3. Find Marvel CI which has been set for the phone calls and pair it.
  4. The pairing code is 0000.

Can Skype, Zoom, FaceTime and WhatsApp be used with Marvel CI?

Yes. Marvel CI supports Skype, FaceTime and WhatsApp for phone and video calling. The call will be heard in Marvel CI as with normal phone calls. If using Skype on a computer, Marvel CI needs to be paired to the computer. 


Can I connect a tablet to Marvel CI?

Yes, you can connect to any tablet equipped with Bluetooth 2.1 or newer.

  1. On your tablet, ensure that Bluetooth wireless technology is enabled and search for Bluetooth enabled devices in the connectivity settings menu.
  2. Connect the M Battery to Marvel CI to start the three-minute pairing window. 
  3. Your tablet shows a list of found Bluetooth devices. Select Marvel CI from the list.
  4. If you are wearing your processor, you will hear a confirmation alert.

Can I use my smartwatch with Marvel CI?

Yes, as long as your smartwatch supports Bluetooth classic (A2DP and HFP). With A2DP you can listen to music, and with HFP you can make hands-free phone calls. Please be aware that not all smartwatches support these profiles.


What is Flight Mode?

Flight mode disables wireless connectivity (e.g., to Bluetooth-enabled devices, accessories) in the Marvel CI sound processor. It does not disable normal operation. To activate flight mode, hold down either the top or bottom of the multifunction button while attaching the battery. Continue to hold the button down for approximately 10 seconds, until you see a long, solid orange LED. To deactivate flight mode, simply remove and reattach the battery.


Can I use the AB Remote mobile app on a tablet?

AB Remote mobile app is not supported for tablets.


How many hearing devices can be paired to AB Remote mobile app?

Up to two paired hearing devices can be paired to AB Remote mobile app at a time.


Can I use the AB Remote mobile app while streaming?

The AB Remote mobile app can be used to adjust environmental balance while streaming media via Bluetooth or from any compatible accessories. AB Remote mobile app cannot be used while streaming a phone call or video call via Bluetooth.


Connectivity Troubleshooting for Marvel CI


What can I do if there are issues with sound quality for phone calls?

First, try restarting your Marvel CI sound processor. Next, try restarting your smartphone.

In addition, you can change the bandwidth setting in the AB Remote mobile app. Fixed and adaptive bandwidth settings are available.


Bluetooth is disconnecting and reconnecting. Why is that?

If Marvel CI is powered off, it will automatically disconnect from a paired device, such as the mobile phone.


Additional troubleshooting steps if Marvel CI is disconnecting from the phone:

  • Verify that Marvel CI did not run out of battery.
  • Verify Bluetooth is enabled on your phone.
  • Make sure the phone is within range. If you were out of range (10 m / 30 ft) for a longer period of time, it may take up to two minutes for Marvel CI to connect again.
  • Make sure you have no other devices connected to your phone (such as the car Bluetooth system). This may cause Marvel CI to disconnect.

What do I do if I have connection problems with Marvel CI in the car?

If your car is equipped with a Bluetooth system that was previously paired to your mobile phone, it will try to connect your phone every time you enter the car. This may result in a connection loss to Marvel CI, as a phone can only support one headset connection at a time.

The exact behaviour depends on the version and configuration of your car’s Bluetooth system. To prevent unwanted switching, you may consider removing your car’s Bluetooth system from your phone’s list of paired devices via the mobile phone configuration screen.


What do I do if Marvel CI is not connecting to the smartphone to use the AB remote mobile application?

  1. Ensure that your Bluetooth is on and Marvel CI is on.
  2. When you open the app, you will see status indicators for each device which will indicate if your Marvel CI is currently connecting, connected, or the connection has failed.
  3. If the app cannot connect, close the app completely, restart your smartphone, and restart the app.
  4. If a restart of the app does not work, remove the app and reinstall it.

How can I disable the streaming of touch sounds when using my Android Phone?

If you do not want to hear the touch sounds with Marvel CI, please go to your smartphone settings and disable the following:

  • Touch sound
  • Lock screen sound

How can I disable the streaming of touch sounds from my phone when using my iPhone?

If you do not want to hear the touch sounds with Marvel CI, please go to your iPhone settings:

  • Select Sounds.
  • You can change the toggle of the Keyboard Clicks to OFF.

How can I disable sound notifications from apps when using my Android Phone?

  1. Go to Settings > Apps & notifications > Notifications > App notifications.
  2. Here, you’ll see a list of all apps installed on your Android device. Scroll and tap any app whose notifications you want to customise.
  3. Next a list of all types of notifications the app can send will appear. Toggle each type of notification on or off as desired.
  4. Tap on each notification type to change it from Sound to Vibration or other settings. You can also toggle the main switch to block all notifications from that app.

How can I disable sound notifications from apps when using my iPhone?

You can selectively silence notifications on a per-app basis within iOS Settings.

  1. Open Settings and tap on Notifications (labeled as Notification Center in the latest iOS versions).
  2. Tap the app in question and scroll down to Sounds, swipe to Off.
  3. Repeat for other apps in the Notification Center preferences.

What do I do if I have connection problems with Marvel CI and my Bluetooth device?

  1. Check if your Bluetooth is enabled on the Bluetooth device.
  2. Connect the M Battery to Marvel CI to restart the 3-minutes pairing window. 
  3. If this is not working, power off the Bluetooth device and back on. 
  4. Delete Marvel CI from the list of devices on the Bluetooth device and restart the pairing process all over again. 
  5. Make sure that Marvel CI is not connected to 2 other Bluetooth devices in range of the Bluetooth device you want to connect to.

Support Documents


The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Sonova AG is under license.

Apple, the Apple logo, iPhone, and iOS are trademarks for Apple Inc., registered in the US and other countries. App Store is a service mark of Apple Inc.

Android, Google Play, and the Google Play logo are trademarks of Google Inc.

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