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Nuisance Call Solutions

How to Block Nuisance Calls - Step-by-Step for iPhone and Android

About 2 min read

What Is Call Blocking?

Call blocking prevents specific phone numbers from reaching you. The blocked caller hears a message or gets sent to voicemail.

Block a Specific Number on iPhone

Open Phone app > Recents > tap the "i" next to the number > scroll down > "Block this Caller." Or go to Settings > Phone > Blocked Contacts > Add New.

Block a Specific Number on Android

Open Phone app > Recents > long-press the number > "Block number." The exact wording varies by manufacturer.

Block All Unknown Callers

iPhone: Settings > Phone > Silence Unknown Callers. Android: Phone app > Settings > Blocked numbers > Block unknown callers.

What the Blocked Caller Hears

Varies by carrier and settings. iPhone sends to voicemail after one ring. Japanese carriers play different guidance messages.

Carrier Anti-Spam Services

NTT Docomo, au, and SoftBank offer paid services (220-330 yen/month) that automatically identify and block known spam numbers using databases.

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Frequently Asked Questions

Will the caller know they've been blocked?

It depends on the carrier and settings. iPhone's built-in blocking sends calls to voicemail after one ring, making it look like you didn't answer. Carrier services may play a message that hints at blocking.

How do I unblock a number?

iPhone: Settings > Phone > Blocked Contacts > swipe to remove. Android: Phone app > Settings > Blocked numbers > tap X to remove.

Is there a limit to how many numbers I can block?

Neither iPhone nor Android has a limit on the block list. You can register hundreds of numbers. However, spam operators change numbers frequently, so individual blocking alone may not keep up. Consider adding a carrier blocking service or spam filter app.

Related Number Ranges

050(IP Phone)070(Mobile)080(Mobile)090(Mobile)

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