Most smartphones have a tiny hole at the bottom of them but it's not always clear what it's for. Here's what that hole is for ...

No one likes dropping offline, especially if you need to stay in contact. Get expert tips for boosting your cellphone signal on iPhone or Android.

Changing physical SIM cards on your phone is always a fiddly business. First, you have to root for the little SIM tray tool ...

SIM swap attacks are rising fast. Learn how criminals exploit SMS codes and how to protect your phone, banking, and email ...

Learn the simple, free steps you can take right now to boost your Android's performance and improve its battery life. With more than a decade of experience, Nelson covers Apple and Google and writes ...