An ex who can't take a hint, telemarketers, and spoofing scammers are all reasons to Number Blocking. When you've had enough, block the number. However? Here are OS and carrier-specific steps. More From Us:Benchmarks Reveal Galaxy Flip 4 Secret Caller ID Putting your number in the National Do Not Call Registry will limit telemarketing calls. On DoNotCall.gov, you can … [Read more...] about Number Blocking From Smartphones