Phone suddenly showing "No SIM" or "Invalid SIM"? Don't panic, there are a few quick checks that can get you reconnected fast ...

Cellular Smart watches with 4G SIM, and Wi-Fi features allow people to be connected at all locations without relying on a ...

When you use an iPad that comes with both Wi-Fi and cellular options for browsing the web, your device will have a removable Subscriber Identity Module, usually referred to as SIM cards. According ...

The new iPhone 17 series now only supports eSIMs in more than just the US, but has your country made the switch? Here's the full list, and one key reason why it's not a bad thing.

Does Straight Talk Use SIM Cards?. Pay-as-you-go cell phone provider Straight Talk employs SIM cards, allowing you to use your own unlocked GSM or CDMA phone on the network or purchase one of the ...

Millions of mobile phones may be vulnerable to spying due to the use of outdated, 1970s-era cryptography, according to new research due to be presented at the Black Hat security conference.

Find out how to trim your own micro-SIM card for use in phones that require this new format.

Switching carriers or using a different SIM card on your iPhone doesn’t have to be complicated. If your device is SIM-locked, ...

Apple may be dropping traditional physical SIM card support on iPhone 17 in additional countries this year, expanding from ...

Buy a Pixel 10 in the US, and the phone Google sends you will lack any way to physically insert a SIM card. To activate the phone for cellular service, you’ll have no choice but to go with an eSIM.