How do you turn off the speaker options IPhone 13

Hello dawnfromcaldicot,

Thank you for using Apple Support Communities. When on a phone call, you can press the speaker icon to get a list of other options. These options include connected Bluetooth devices, built-in speaker mode or even an option to select nearby speakers such as a HomePod.

All adjustable settings for the Phone app can be found by going to Settings > Phone. You'll see there isn't a built-in option to disable the extra menu options from appearing when you press the speaker icon.

You might want to review Apple’s feedback submission policy in order to see if you’re able to leave them feedback: Unsolicited Idea Submission Policy

Thank you for using Apple Support Communities. Best of luck.