Hi! I understand your Signia hearing aids aren't connecting to the Signia app on your iPhone. Let’s work through this together.

To start, could you tell me if you’ve already tried any steps like restarting the app or your phone, or toggling Bluetooth off and on? Also, do your hearing aids show up anywhere in your iPhone Bluetooth settings?

Meanwhile, here’s a step-by-step approach we can try:

1. Restart your iPhone and the Signia hearing aids: Power off your hearing aids by placing them in the charger for 5 seconds (if rechargeable) or turning them off, then back on. Restart your iPhone running iOS 18.5.

2. Toggle Bluetooth: Go to your iPhone’s Settings > Bluetooth, turn Bluetooth off, wait a few seconds, then turn it back on.

3. Close and reopen the Signia app: Swipe up to close the app completely from the app switcher, then open it again.

4. Check for app and iOS updates: Ensure your Signia app and your iPhone iOS version are up to date. Sometimes compatibility issues cause the connection problem.

5. Pair through iPhone Accessibility settings:
- Go to Settings > Accessibility.
- Scroll down to Hearing Devices.
- See if your hearing aids appear there and try to connect.

6. If connection still fails, try uninstalling and reinstalling the Signia app.

If after these steps it’s still not connecting, there may be firmware update needs on your hearing aids or deeper Bluetooth settings issues. Let me know what you’ve tried and found, and we can proceed with more advanced troubleshooting if necessary.

Are you okay with trying these steps?