"The "Block Unknown Callers/Messages" feature is not working on iOS 16 Pro Max with iOS 26: When trying to block unknown calls and messages the Block button does not work and the number does not show up in your blocked list for call and messages. Repeated attempts results in failure of calls and numbers not being blocked. IOS 26 iPhone 16 Pro Max."
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Blocking Unknown Callers and Messages:
I. Report These: For anything that appears to be a scam, you can report it directly to Apple and your local governance. Use my User Tip: Using the Photos App to Report Scams: - User Tip
II. Blocking These:
While awaiting a fix to the system...
A. Using the App Called Bouncer:
For text messages, there is an app called Bouncer, which block messages out by keywords. But, if these are not text messages, then is would not be an option. Here is the link: Bouncer: Text Messages Blocker 4+ - App Store
B. Use Malwarebytes Mobile Security:
The free version blocks popups. The paid version blocks out known spam numbers, unknown callers, lets you add number to the block list, and allows you to report these numbers to the Developer. So, consider using it. Read the following post to see how to use this software: Blocked numbers - Apple Community
Get it Right in the App Store: Malwarebytes - Mobile Security - App Store