A specialist from the General Staff of the Armed Forces of Ukraine has said that it may become necessary to switch off mobile internet while air-raid warnings are in effect if the Russians begin launching drones equipped with SIM cards on a large scale.

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 easy to swap your phone or carrier whenever you're getting ...

Seeing “No SIM” or “Invalid SIM” on iPhone? Check your SIM card, restart, or update your carrier settings. Simple fixes often restore cellular service quickly.

Apple’s move to make its new iPhone Air e-Sim only has thrown the spotlight on e-Sim adoption among Indian smartphone users. Even as Indian subscribers predominantly use the physical sim cards, the e-Sim, (embedded subscriber identity module) adoption is growing and is expected to hit further highs in 2025, as per analysts and e-Sim providers.

As the iPhone Air goes eSIM-only, and some of the best Android phones also drop the SIM card tray, here's a look at the eSM, why it's better than a physical SIM, and a definitive list of every phone that's eSIM-only,

In India, many users face SIM card problems after moving to a new phone. If key settings are not activated, your SIM may stop working, cutting off calls, internet, and mobile network. Here's a quick guide to the essential SIM settings you should enable on a new smartphone.