Cellular providers offer all kinds of security and data encryption to their customers, but there's one task users should ...

I'm not buying the eSIM hype — physical SIM cards are more reliable and make you less dependent on your cellular carrier.

SIM cards have been an integral yet often forgotten part of owning a smartphone for the past few decades. For most users, the SIM card defines the basic commercial relationship they have with their ...

Some owners of Apple's new iPhone 4S have been hit with SIM card error messages, even if they are connected to a CDMA carrier that does not use SIM cards. One reader ...

Jason Cipriani is based out of beautiful Colorado and has been covering mobile technology news and reviewing the latest gadgets for the last six years. His work can also be found on sister site CNET ...

The SIM Toolkit app is the real connecting mechanism of your phone with cellular towers, and is a lifesaver in situations like international roaming.

A major exploit in Google Pixel smartphones has just been revealed, allowing an attacker to unlock and access your smartphone by switching out the SIM card. The issue has been discovered by David ...

If you’ve bought an iPad with 4G/cellular capabilities (we discuss whether that’s a good idea in our 2015 iPad buying guide) or a new iPhone, you need to buy and install a SIM card. Here, we explain ...