MFi hearing devices are hearing aids built with Apple’s “Made for iPhone” technology, allowing them to connect directly to iPhones, iPads, Macs, and Apple Vision Pro. The “MFi” label means the hearing aid has been licensed and certified by Apple to integrate with its ecosystem at the operating system level, not just through a third-party app. This gives you features like streaming phone calls, music, and other audio straight to your hearing aids, plus the ability to adjust volume and settings from your phone.
How MFi Hearing Aids Work
MFi hearing aids use a version of Bluetooth Low Energy that Apple developed specifically for hearing devices. Unlike standard Bluetooth, which maintains a constant connection and drains battery quickly, this protocol conserves power by connecting only when needed. That energy efficiency matters because hearing aids run on tiny batteries or small rechargeable cells that need to last a full day.
The tradeoff is that MFi’s Bluetooth Low Energy signal has a more limited range than standard Bluetooth and can struggle to pass through walls. It was also, for several years, the only direct-streaming option available, and it worked exclusively with Apple devices. That meant Android users were left out until Google introduced its own protocol in 2019.
What You Can Do With an MFi Hearing Aid
Once paired, your Apple device becomes a remote control for your hearing aids. You can adjust microphone volume, switch between audio presets (like settings for noisy restaurants versus quiet rooms), and stream any audio playing on your device directly into your ears. Phone calls, podcasts, navigation directions, video calls: all of it routes to your hearing aids without any intermediary device.
Some MFi hearing aids support bidirectional streaming, which means the hearing aid’s microphone can pick up your voice and send it back to your phone. That lets you take hands-free phone calls without holding the phone near your mouth. Devices that only support unidirectional streaming can receive audio but can’t transmit your voice back, so you’d still need to speak into the phone normally.
Apple also built a feature called Live Listen into iOS. When turned on, it uses your iPhone’s microphone to pick up sound from across the room and sends it directly to your hearing aids. This can help in situations where someone is speaking at a distance or in a noisy environment. You can access it through the Hearing module in Control Center for quick toggling. Many manufacturers also offer their own companion apps with additional controls and fine-tuning options beyond what Apple’s built-in settings provide.
Which Brands Make MFi Hearing Aids
Apple maintains an official list of compatible devices, and it’s extensive. Well over 80 manufacturers produce MFi-certified hearing aids. The major clinical brands are all represented: Oticon, ReSound, Starkey, Signia, Widex, Phonak (through related brands), Bernafon, and Jabra. More budget-friendly and retail options like Kirkland Signature (Costco’s house brand), Lexie, Lucid Hearing, and Jabra are also on the list.
Cochlear and MED-EL, which make cochlear implants and bone-anchored hearing systems, are certified too. So MFi compatibility isn’t limited to traditional hearing aids. If you’re considering a new hearing device and use Apple products, chances are high that most current-generation models from any major brand will carry MFi certification.
How to Pair MFi Hearing Aids
Pairing happens through your iPhone or iPad’s Accessibility settings rather than the regular Bluetooth menu. You put your hearing aids into pairing mode (usually by opening and closing the battery door, or holding a button on rechargeable models), then navigate to Settings, Accessibility, and Hearing Devices. Your phone will detect the hearing aids and prompt you to pair them. Once connected, the pairing persists across your other Apple devices signed into the same Apple ID.
For day-to-day use, you can add the Hearing module to your Control Center so adjustments are just a swipe away. On a Mac, the Accessibility Shortcuts panel offers similar quick access. The connection generally re-establishes automatically when you put your hearing aids on each morning, though occasional re-pairing may be needed after software updates.
MFi vs. Android Compatibility
Apple’s MFi protocol only works with Apple devices. For Android users, Google developed a separate protocol called ASHA (Audio Streaming for Hearing Aids) in 2019. ASHA extended Bluetooth Low Energy streaming to Android phones, but its real-world performance has been inconsistent. Not all Android phones support it, and users frequently report less reliable connections and lower audio quality compared to MFi on iPhones.
This gap is one reason many audiologists have historically recommended iPhones to hearing aid wearers who want reliable streaming. However, the hearing aid industry is now transitioning toward a universal standard called Bluetooth LE Audio, which is designed to work across all platforms. LE Audio promises better audio quality, lower latency, and native support on both Apple and Android devices, which could eventually make the MFi vs. ASHA distinction irrelevant.
Battery Life With MFi Streaming
Streaming audio to hearing aids naturally uses more power than wearing them without a connection. But because MFi uses an energy-efficient Bluetooth Low Energy protocol rather than standard Bluetooth, the battery impact is moderate. Testing from hearing aid manufacturers has shown that the power draw during MFi streaming is comparable to, and in some cases better than, other Bluetooth approaches used in hearing aids. Most rechargeable MFi hearing aids still deliver a full day of use with several hours of streaming mixed in, though heavy streaming (four-plus hours) will shorten that window.
If you use disposable batteries, expect to replace them slightly more often during weeks when you stream frequently. The difference is typically a day or two of reduced battery life rather than anything dramatic.