When the phone switches from asking for a PIN to asking for a PUK, stop entering codes. If you enter the PUK code wrong too many times, the PUK will lock permanently and you will need to buy a new ...

Want to keep your phone secure? Avoid using this common PIN code — here’s why it’s risky and what to choose instead.

It may be useful to change the PIN code of a newly purchased iPhone (if the PIN is set to 0000 by default for example) or for safety reasons to protect from fraudulent use of your phone in case of ...

Letting someone see your phone shouldn't also mean letting them snoop on your texts, photos, or emails. Here's how to stop it from happening.

Open Settings > Mobile Data. Next, tap on SIM PIN: Following this toggle SIM PIN switch to off. You will then need to enter your SIM PIN before you can turn it off. This is not a way of unlocking a ...

Your PIN code might be frighteningly easy to crack. Researchers at Newcastle University showed how a phone's gyroscope could reveal it.