If you have an Apple or an Android phone—and you probably do—you have the option of locking your phone using a PIN code. With most of these phones, you can choose a four-digit PIN or a six-digit PIN.

If you have a SIM card PIN enabled on your phone to access data on the SIM card, but you repeatedly enter it incorrectly, the SIM card may lock you out from further attempts. You can reset the SIM ...

It’s no secret that smartphone PIN codes are not perfect, but new research suggests they might be next to worthless. A team of scientists at Newcastle University in the U.K. was able to guess a user’s ...

Guess how long it would take a computer to brute-force an 8-number password. The answer: instantly. That's according to Hive Systems' Password Table, which shows how shockingly quick passwords of ...

There's nothing particularly difficult about cracking a smartphone's four-digit PIN code. All it takes is a pair of thumbs and enough persistence to try all 10,000 combinations. But hackers hoping to ...

Martin Lewis urged people to screen grab and email themselves after dialling a 5-digit code on their iPhone, Samsung or ...

You’ve likely seen a list of top 25 passwords that get reused time and time again – “password” is a usual suspect – but what about phone PIN numbers? How ...

Have you ever gotten a new phone only to find out it’s locked to a specific carrier? This often happens when you purchase a subsidized phone from a carrier. The carrier locks the phone so you can’t ...

All of you should have a PIN code or some other form of authentication on your smartphone, preventing unauthorized people from accessing your device and serving as a security measure for theft. But ...