Phone theft is bad enough, but criminals are now targeting SIM cards to access sensitive information, including bank ...

[Jason Gin] wanted to reuse the SIM card that came with a ZTE WF721 wireless ... All [Jason] had to do then was put the SIM in his phone and punch in the sniffed PIN when prompted.

Just because carriers and smartphone manufacturers are phasing out SIM cards doesn't mean you have to switch to eSIMs just yet. It's better to buy a phone that supports eSIM and has a physical SIM ...

(Subscriber Identity Module lock) A function in GSM cellphones that restricts the phone's use to a particular cellular carrier identified by a SIM card. SIM locks are used to ensure subscribers ...

Testing the SIM card in another phone can help determine if the issue is with the SIM card or the device.