How to Block Spam Calls on Android and iPhone

You’re finally relaxing after a long day. Maybe watching a show, scrolling through social media, or about to take a nap and then your phone rings. You grab it, hoping it’s someone you know but nope. It’s another “Congratulations! You’ve won a free cruise!”

We’ve all been there. Spam calls have become one of the most annoying parts of owning a smartphone. They interrupt your day, waste your time, and in some cases, even try to scam you.

But here’s the good news you don’t have to deal with them anymore. Both Android and iPhone have simple tools that can help you silence, filter, and completely block spam calls. And if that’s not enough, there are a few great apps that can take it a step further.

Why Spam Calls Keep Happening

If you’re wondering why you get so many spam calls, the answer is simple your phone number is out there somewhere. Maybe you entered it on a shopping site, filled out an online form, or it leaked through a data breach.

Scammers use automated systems called robocallers that can dial thousands of numbers per minute. Most are just fishing for someone to pick up and once you do, you’re flagged as “active,” which means even more calls.

Even legitimate companies sometimes share or sell phone numbers to “marketing partners.” That’s why it feels like your number is on a never-ending spam list.

The best defense? Block and filter calls before they even reach you.

How to Block Spam Calls on Android

If you’re using an Android phone, blocking spam calls is quick and effective. Here’s how to do it manually:

1. Open the Phone app.
2. Tap Recents or Call History.
3. Press and hold the number you want to block.
4. Choose Block or Report spam.

From that moment, the number can’t contact you anymore — no calls, no texts.

But there’s more you can do. Android has built-in spam protection that uses Google’s vast caller ID database. Just open your Phone app → Settings → Caller ID & Spam, and turn on Filter spam calls.

If you have a Samsung phone, enable Smart Call under Settings → Caller ID and Spam Protection. It identifies known spam numbers before your phone even rings.

These built-in tools are surprisingly smart and they’ll quietly handle most of the junk calls for you.

How to Block Spam Calls on iPhone

If you’re on iPhone, you’ve got a few solid options too.

To block specific numbers:

1. Open your Phone app.
2. Go to Recents.
3. Tap the “i” icon next to the spam call.
4. Scroll down and tap Block this Caller.

Simple, right? But what if you’re getting calls from numbers you don’t recognize?

Apple lets you silence unknown callers so your phone doesn’t ring at all when it’s someone not in your contacts. Here’s how to enable it:

• Go to Settings → Phone → Silence Unknown Callers, then toggle it on.

Now, if a spam number calls, your phone won’t ring. The call goes straight to voicemail and you can check it later just in case it was something important.