State-owned telecom operator BSNL has rolled out its Quantum 5G (Q-5G) internet service, offering high-speed mobile broadband ...

South Korean mobile provider SK Telecom has announced free SIM card replacements to its 25 million mobile customers following a recent USIM data breach, but only 6 million cards are available through ...

A SIM card, or subscriber identity module, is a small card in your cellphone that connects you to the network. Your SIM card contains your phone number, and lets you make phone calls, send text ...