Samsung
Customize Quick Decline Messages auf Samsung
Quick decline messages are short texts that Samsung sends automatically once you reject an incoming call by swiping the decline button upward. Instead of a plain rejected call, the caller receives a text such as 'Please text me' or 'Can you call back later?' along with a link to your location if you allow it.
These messages come with a small set of defaults, but you are not limited to them. You can remove one you never use, rewrite the wording, or add a new message for situations the default texts do not cover, such as being in a meeting or driving.
Where to edit the messages
Open Tap on Phone ➔ Open the Menu ➔ Tap on Settings ➔ Tap on Quick decline messages. Here you see the full list of stored texts.
To remove one, select it and confirm the deletion. To create a new entry, tap Add, enter your own wording in the text field and confirm.
Changes apply immediately and work the same way for every SIM if your phone supports dual SIM. If a message still does not appear when declining a call, check that message sending for declined calls is enabled in the same settings screen, since a disabled option skips sending any text regardless of what is stored in the list.