When you are not able to take a call, your iPhone provides three options to reply with via a quick text message: "Sorry, I can't talk right now", "I'm on my way", and "Can I call you later?"
You can customise these messages as required to provide your own quick responses.
- From the home screen, open Settings
- Select Phone
- Select Respond with Text
- Select which pre-written sentence you would like to edit
- Type in your new personalised message