I can’t find the Dumb Phone widget
🪲 It sounds like the classic iOS Add Widget bug strikes again!
Dumb Phone will have a name of “dp” and appear between Contacts and Files on the Add Widget screen.

If it doesn't appear in the list;
- Re-install the Dumb Phone app from the App Store
- Restart your iPhone
- Switch iPhone language to another English variant, then back to your current one
How to switch language
- Open Settings app
- Tap General → Language & Region → iPhone Language
- Pick another English language, then check the Add Widget screen again
You can revert the language change straight after.