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 ...

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 ...

Take out the card slot with the included tool Align your card in the tray Carefully reinsert the tray First, locate the SIM card tray on the left side of the handset. It will be just above the volume ...

So you just got your brand new G7 ThinQ from LG, but you’re finding that 64GB of built-in storage is just not enough. Or maybe you’re having a hard time inserting your carrier’s SIM card. Here’s how ...

Your new Samsung Galaxy S10e has a combined nano SIM and microSD card tray so, inserting and removing both can be done together or separately. It’s located at the top of your phone and fits well into ...

If you have a SIM card that you want to put in another phone that you have, but it doesn’t fit in the SIM card tray, here’s how to resize a SIM card so that it does fit. There are three sizes of SIM ...

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The subscriber identity module -- SIM -- contains the information used to connect to your wireless carrier's network from your iPhone 4. If you are planning to resell your company's iPhones, you ...

Do you get the error message “No SIM Card Detected” or “No SIM Card Installed” after inserting a SIM card into your phone? This problem often occurs when you ...

For many years, mobile phones received cellular service through a physical SIM (subscriber identity module) card that connected your handset to your phone carrier. These physical SIM cards made it ...