Hello! I understand you’re having an issue with the myPhonak app where there is no telephone access. Could you please clarify what you mean exactly by "no telephone access"? For example, are you unable to make or receive phone calls through the app or hearing aids? Or is the app not connecting to your iPhone's phone functions properly?

Knowing a bit more will help me guide you better. In the meantime, I can offer some initial steps to troubleshoot common connection issues between the myPhonak app and your iPhone running iOS 18.6:

1. Bluetooth Check
Go to your iPhone’s Settings > Bluetooth and make sure Bluetooth is turned on. If it’s on, try toggling it off and then back on.

2. Restart Devices
Power off and restart your iPhone. Then also restart your hearing aids by turning them off and on again.

3. Re-pair Hearing Aids
Sometimes unpairing and pairing again helps. Go to Settings > Bluetooth, find your hearing aids under My Devices, tap the info (i) icon, and choose “Forget This Device.” Then open the myPhonak app and follow the steps to pair your hearing aids again.

4. App Permissions
Check if the myPhonak app has permission to access the microphone and phone features on your iPhone. Go to Settings > myPhonak, and ensure all necessary permissions are enabled.

5. Update myPhonak app
Check the App Store for any updates for the myPhonak app and install if available.

If you have tried any of these, please let me know which ones so I can provide more detailed or advanced steps to restore your phone access through the app.

Does this sound like the problem you are experiencing? If you can provide more details about what specifically is not working with telephone access, I can tailor the advice further.