Some owners of Apple's new iPhone 4S have been hit with SIM card error messages, even if they are connected to a CDMA carrier that does not use SIM cards. One reader ...

If you've ever called your carrier's customer service to activate a prepaid SIM card or troubleshoot a malfunctioning Android SIM card or iPhone SIM, then you've likely needed your ICCID number. The ...

Photo: Ed Hardy/Cult of Mac A hotly anticipated feature wasn’t available when the iPhone XS models arrived last week, but Apple is hard at work bringing Dual SIM support to these new handsets. This ...

A recent rumor claimed Apple will add dual-SIM functionality to at least one of the handsets in this year’s iPhone lineup. Now its latest developer update has all but confirms those claims. Code ...