What is the best iPhone 11 spam call blocker?

Hello Salaal,

Thank you for reaching out to Apple Support Communities, and we'll be happy to help in any way we can. We understand you're having issues with spam calls that you'd like to block. Follow the steps here for information about how to do this on your iPhone: Avoid unwanted calls on iPhone - Apple Support

"You can avoid unwanted calls by blocking certain people and sending unknown and spam callers directly to voicemail.

Block voice calls, FaceTime calls, and messages from certain people

In the Phone app , do any of the following.

• Tap Favorites, Recents, or Voicemail. Tap  next to the number or contact you want to block, scroll down, then tap Block this Caller.
• Tap Contacts, tap the contact you want to block, scroll down, then tap Block this Caller.

Manage your blocked contacts

1. Go to Settings  > Phone > Blocked Contacts.
2. Tap Edit.

Send unknown and spam callers to voicemail

Go to Settings  > Phone, then tap any of the following:

• Silence Unknown Callers: You get notifications for calls from people in your contacts, recent outgoing calls, and Siri Suggestions.
• Call Blocking & Identification: Turn on Silence Junk Callers (available with certain carriers) to silence calls identified by your carrier as potential spam or fraud."

We hope this helps.

Cheers!