A SIM card, or subscriber identity module, is a small card in your cellphone that lets you place phone calls, send text messages, and more.

These two ways of connecting your phone to a cellular network are very different. We tell you about each and how you can switch from one to another.

If your SIM card is not showing a signal even after multiple fixes, then you need to try these solutions: If your SIM is old, bent, or frequently loses connection, it’s better to get a replacement SIM ...

"I failed yesterday, so I lined up early to replace my SIM card before going to work." On April 29, in front of an SK Telecom agency in Jung-gu, Seoul, people were waiting from 8 a.m. on the second ...

SK Telecom (SKT) announced April 22 that “customer USIM data was leaked due to malware,” but the company did not disclose what and which sensitive information was leaked, or to whom the information ...

What just happened? Qualcomm announced that its latest mobile platform is ready to integrate eSIM functionality directly into SoC silicon. The integrated SIM (or iSIM) form factor is highly attractive ...