How to block numbers and spam calls on a Samsung Galaxy

howtosimply.com/guides/how-to-block-numbers-and-spam-calls-on-a-samsung-galaxy/ · Checked October 2026 · Samsung Galaxy A57 5G (SM-A576B), One UI 8.5, Android 16

6 of 6 steps with real screenshots · 1 official source below

Device

Android

Shown on

Samsung Galaxy A57 5G (SM-A576B), One UI 8.5, Android 16

App

Phone

Path

Phone › More options › Settings › Block numbers: add the number

Real screenshots

6 of 6 steps

What we did

Observed: looked at each screen, changed nothing

Our phone

Shown on Galaxy A57, One UI 8.5

Checked

October 2026

Sources

1 official, linked below

Step by step

1. 

   Open the Phone app settings

   Open the Phone app, tap the three dots (More options) and tap Settings.

   Done

2. 

   Tap Block numbers

   It is in the middle of Call settings.

   Done

3. 

   Add a number

   Type the number in Add phone number and tap +. Or tap Recents or Contacts and pick it from the list.

   Done

4. 

   Block unknown numbers

   Block calls from unknown numbers is meant for callers who hide their number. Switch it on if those calls bother you.

   Done

5. 

   Turn on Caller ID and spam protection

   Back in Call settings, tap Caller ID and spam protection. It uses Hiya to name unknown callers and can block spam and scam calls.

   Done

6. 

   Read the Hiya terms

   On our phone, tapping the Caller ID and spam protection switch opened a box saying the service is subject to Hiya's Terms of Service and Privacy Policy. Tap Agree only if you accept them. We did not tap Agree on our test phone, so its switch is still off in these pictures.

   Done

If you do not see this option

• The number is already a contact Samsung says to open Contacts, tap the contact, then More, Block contact and Block. The contact stays in your list but cannot reach you. Source: Block a phone number or contact on your Galaxy phone
• The spam came as a text Samsung says that in Samsung Messages you touch and hold the conversation, tap More, Block and confirm. Its blocked list is under Settings, Block numbers and spam. Source: Block a phone number or contact on your Galaxy phone

If this does not work

• Unknown callers still get through Samsung says Block calls from unknown numbers (Smart Call) may not be available with every carrier. If it does not work, Samsung suggests clearing the Phone app's data under Settings, Apps, Phone, Storage, Clear data, then switching it on again. Source: Block a phone number or contact on your Galaxy phone
• Blocked callers still leave voicemail Samsung says to contact your carrier to block voicemails from specific callers. Source: Block a phone number or contact on your Galaxy phone
• You blocked someone by mistake Samsung says to open Phone, More options, Settings, Block numbers and tap the red minus next to the number. A contact can also be unblocked from Contacts, More, Unblock contact. Source: Block a phone number or contact on your Galaxy phone

About this guide

The Samsung Phone app has its own blocking page, separate from Google's Phone app. Blocked numbers cannot call you, and you get no notification when they try.

Both blocking switches were off on our phone.

Good to know

Spam that still gets through can be blocked one by one: open the call in Recents and block the number from there.

In short: Phone, More options, Settings, Block numbers: add the number. Caller ID and spam protection for spam.

📷 See real photos from the Galaxy A57 in our Camera Lab, next to 10 other phones.