For most users, a simple screenshot is the safest backup. | Action | Phone App | Messages App | Smart Call | | :--- | :--- | :--- | :--- | | Block a caller | ✅ | ❌ | ❌ | | Block a texter | ❌ | ✅ | ❌ | | Auto-block spam | ❌ | ❌ | ✅ |

Tap Block numbers and messages → Block numbers .

Open the Phone app (green icon with a white phone receiver).

Open the Messages app.

Phone app → ⋮ → Settings.

Tap the three vertical dots (⋮) → Settings .

Blocking spam callers is a relief—until you accidentally block your dentist or can’t figure out why your colleague’s texts aren’t coming through. If you own a Samsung Galaxy device, finding your blocked list isn’t as obvious as it is on stock Android. Samsung hides this list inside the Phone app , not the system settings.