So you’ve chosen Ultra Mobile as your carrier. Great choice! But before you start enjoying those international calling features or high-speed data, you need to install your SIM card. Don’t worry; ...

Technicians in Shenzhen’s Huaqiangbei electronics market district have modified Apple’s iPhone Air to support a physical SIM ...

What is a SIM card used for? A SIM card, or a subscriber identity module/subscriber identification module, is a tiny memory card that contains unique information and is linked to a particular network ...

While most people seem to manage just fine with a single SIM card in their smartphone, some -- especially travelers, who can save money by fitting a local SIM card into their handset -- love the ...

A Chinese tech shop has done what Apple chose not to: add a physical SIM card slot to the iPhone Air. There’s a catch, though ...

1. With your Surface Pro (5th Gen) with LTE Advanced facing down, gently pull out the kickstand. The kickstand has the Microsoft logo on the back. 2. Remove the SIM ejector tool from the instruction ...

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 ...

Once you’ve activated your iPhone with your carrier, it should continue to work on the cellular network without any problems as long as you’re within range of a tower. Nevertheless, the vagaries of ...

Apple’s latest iPhone Air has taken a bold step forward in mobile technology – it’s an eSIM-only device. That means there’s no slot for a physical SIM card, anywhere in the world, including India. For ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Ryan Whitwam Most people rarely think about SIM cards, the tiny plastic ...