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in hearing aids. If you experience interference
from a mobile phone being used close by, you can
minimize this interference in a number of ways.
Switch your hearing aids to another sound mode,
turn your head in a different direction or locate
the mobile phone and move away from it.
Do not place the charging accessories close
to an induction cooking surface. Conductive
structures inside the charging accessories could
absorb inductive energy resulting in thermal
destruction.
Charging case and power supply must be
protected against shocks. If the charging case
or power supply is damaged after a shock, the
devices must not be used anymore.
Labeling
The serial number and year of manufacture are
located under clear plate (see "Your charging
case" on page 12 for location).
Security Notice
Consumer data is private data and its protection is
important:
• Make sure the smartphones are up-to-date with the
latest Operating System security updates. Enable
automatic updating.
• Make sure your installed app version is up-to-date
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• Only use genuine Sonova apps from official stores
with your hearing aids.
• Only install reputable apps from official stores
• Make sure you use strong passwords and keep
credentials secret
• Lock phone with PIN and/or biometric (e.g.
fingerprint, face) and set the phone to lock
automatically after several minutes of inactivity.
• Make sure the installed apps only have permissions
they need
• Avoid creating a Bluetooth pairing with your
hearing aids in a public area. This is due to the risk
of unwanted interference from a 3rd party. We
recommend to do this Bluetooth pairing at home.
• DO NOT use a jailbroken or rooted phone
Mobile Phone Compatibility Rating
Some hearing aid users have reported a buzzing
sound in their hearing aids when they are using cell
phones. According to the ANSI 63.19 (American
National Standard Methods of Measurement of
Compatibility between Wireless Communications
Devices and Hearing Instruments) standard, the
compatibility of a particular hearing aid and cell
phone can be predicted by adding the rating for
the hearing aid immunity to the rating for the cell
phone emissions. The sum of the hearing aid rating
(e.g. M2/T2=2) and the telephone rating (e.g. M3/
T3=3) is 5, and any combination that equals 5 will
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