Need a hand?

Open Settings → Apps → Phone → Call Blocking & Identification and turn on Kansel. If it is already on, switch it off and on again, then open Kansel and tap “Update”. Remember that iOS always lets calls from your saved contacts through, and on iOS 26 also from numbers you called yourself: delete your calls to that number from Recents and it is blocked again.

Open Kansel → Protection and make sure Kansel is set as your call-screening app (Settings → Apps → Default apps → Caller ID & spam app). If you use another caller-ID app, note that Android only allows one at a time.

The list refreshes in the background once a day. You can refresh it manually with the “Update” button on the home screen. If that fails, check your connection and make sure battery saver is not stopping Kansel from running in the background.

Auto-block is something you switch on: open Kansel → Protection and turn on “Auto-block”. The first time, it asks you to sign in with Apple or Google. If it was on and stopped, open the app while you are online so it can renew.

If the number is on your personal list, remove it from “My list”. If it is on the community list, its owner can submit a request on the appeal page.

Inside the app: Settings → Account → Delete account. Full details are on the delete account page.