You can read more about how to block calls or messages on iPhone over on Apple's support site.

How To Block Callers / Spam Inside iPhone’s Phone App There are several ways how to block someone on iPhone. This first step will block specific numbers from calling your iPhone. Once you’ve followed ...

This can be done on your iPhone by going to Settings > Messages > Blocked Contacts. You will then see a list of telephone numbers and people you have blocked from sending your text messages.

Don't worry about downloading apps -- your iPhone already has several tools to block all those annoying calls and texts from random numbers.

There are several ways to block a phone number on your iPhone. You can do it within the Settings app, or the Phone, Messages, and FaceTime apps.

Regardless of whether you have an iPhone or an Android, blocking annoying calls and texts only requires a few simple adjustments in your settings.

When you switch Do Not Disturb off again, though, any messages or emails they've sent will be waiting. And, of course, they may still be messaging away in your social media feed.

Does your phone receive too many calls and messages daily? Then, you should learn how to block spam on your mobile device.

You Can Block Specific iPhone Contacts From Seeing Your ‘Focus’ Status There's an easy—albeit hidden—way to stop certain contacts from seeing your Focus status.

AppleInsider explains how to block phone numbers on iOS, as well as other ways to keep those calls and messages from coming through to your mobile devices.