Every smartphone needs a SIM card that assigns you a phone number and lets you call, text, and use the best data plans. But, there's more than one type of SIM card, and the user experience varies ...

Smart cards power card transactions and show up everywhere. The credit card in your wallet, the badge that unlocks your office, the SIM card in your phone, and the corporate card your finance team ...

SIM has real advantages, but one thing it's been credited for has nothing to do with the technology itself. Here's what's ...