Phonak Audeo Lumity Slim

10 July 2023
Phonak Audeo Lumity Slim hearing aid in Sandalwood

Phonak launched Slim in April 2023 as a rechargeable receiver-in-canal hearing aid using its Lumity platform. This article was first published in July 2023 and describes that generation.

For a broader comparison of the range and fitting options, see our Phonak hearing aids guide.

Phonak SmartSpeechTM technology

Phonak Slim uses AutoSense OS 5.0 to adjust sound processing as the listening environment changes. SmartSpeech is Phonak’s name for a group of features intended to improve speech understanding or reduce listening effort. The features included vary by technology level.

Slim supports compatible Roger microphones through RogerDirect. A remote microphone can help when the speaker is further away or there is background noise. Our Phonak Roger On review explains how it works.

Phonak Audeo Lumity Slim Design

Phonak Slim has separate left and right housings shaped to follow the contour of the head. It sits behind the ear, with a receiver in the ear canal.

The shape differs from a conventional RIC hearing aid. Comfort still needs checking on your own ears, particularly if you wear glasses.

The Audeo Lumity Slim is available in four refined two-tone colour options: Sandalwood, Silver, Graphite, and Copper. These colour choices afford users the liberty to select a hearing aid that either blends seamlessly with their persona or adds a dash of individual style.

Charging & Battery Life

Phonak’s user guide states that a full charge can take up to three hours in the Phonak Slim Charger. How long the hearing aids run between charges depends on their settings and use, including streaming.

If you already wear Slim and the battery no longer lasts as expected, have the hearing aids and charger checked. A charging problem does not necessarily mean the battery needs replacing.

How much does the Phonak Audeo Lumity Slim cost in the UK?

For a current quote, confirm the exact model and technology level, whether the price covers one hearing aid or a pair, and what fitting, follow-up and warranty support are included.

Availability of Phonak Slim and its technology levels needs checking with the provider before you make a decision.

Our hearing aid prices and care guide explains how the support included affects the total cost.

Considering Phonak Slim now

Phonak Slim is part of the older Lumity generation. If you have been offered a pair, check the exact technology level, warranty and care included, as well as whether the physical shape is comfortable behind your ears.

At Alto, we start with a Complete Hearing Assessment and recommend hearing aids around your hearing and the situations you find difficult.

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Adam Bostock

Managing Director, Alto Hearing

Adam Bostock is the founder and Managing Director of Alto Hearing. With over 20 years’ experience in audiology and hearing care, he focuses on hearing assessments, long-term treatment planning, hearing technology, and ear health education.

He writes about the practical realities of hearing, including speech clarity in noise, listening fatigue, and how modern hearing technology supports real-world communication.


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Alto Hearing operates clinics in Kenilworth, Lutterworth, Market Bosworth and Clitheroe.