Why do I have poor audio quality on my phone call with my Phonak hearing aids?

Poor audio quality of my phone call with my Phonak hearing aids

When doing a phone call with Phonak hearing aids the following is important:

Verify your mobile phone signal strength. You may need to move to a location with stronger reception.
Adjust the position of the phone, making sure there are no obstacles between the phone and your hearing aids such as your body, a wall, or hard surfaces as these can interfere with the wireless audio signal.
Ensure you are within Bluetooth range, keeping in mind that factors such as physical obstacles, interference, environmental conditions, and battery status can affect connectivity.
When relocating during a call, make sure to take the phone with you.
Make sure that the phone is streaming the call through the hearing aids and not the speaker of the phone. Accept the call using the multi-function button of the hearing aid.
Sound quality issues during iPhone Bluetooth calls can be solved by turning the iPhone off and on once a day.
For hearing aids with disposable zinc air batteries make sure you are using a fresh battery that has been properly primed (leaving it out of the battery packet without tab for 2-5 minutes prior to inserting into the hearing aid).