After pairing your cellphone to Cell2Jack/Home Phone, your cellphone's audio will be routed to Bluetooth by default.

If you prefer to use your cellphone's speaker for calls, simply select the speaker option from your cellphone's screen.

For iPhone users, you can set your device to automatically redirect call audio to the iPhone speaker and even auto-answer calls after a set period. To do this, navigate to Settings > Accessibility > Touch > Call Audio Routing, then choose your preferred audio destination.

For Android users, please refer to the image below for guidance on where to find the audio selection.