Caller ID is standard now, but it wasn't always. When widespread adoption started in the 1990s, it was controversial to the point that it was widely viewed as an invasion of privacy. For people with ...

When your phone rings and the caller ID is blocked, or it's an unknown caller, it can be pretty frustrating. Especially when you receive repeat unknown calls. If you're ready to stop those annoying ...

Nobody likes receiving calls from No Caller ID numbers, as they're usually scams. But there might be cases where you'll want your iPhone or Android to hide your phone number to protect your privacy.

Does Caller ID Mean Much in the Age of Spoofed Numbers? Your email has been sent Learn how caller ID works, why people use it, how you can manage your own caller ID data, and how to protect yourself.

Phone numbers used to be shared carefully. You gave it to family, close friends, or maybe a workplace, and that was it. Today, your number sits behind.

More than half the smartphone apps tested by The Wall Street Journal sent a serial-number-like identifier for the phone to tracking companies. Some tracking companies use these IDs to create profiles ...