A user has an iPhone 3G from a relative in France. Has the phone, but no SIM card. Can't activate it initially because he has T-Mobile, so no valid SIM at all. I can't even use an ATT SIM (in US) so ...

With smartphones, where Apple leads others often follow - so it launching an iPhone this week without a traditional SIM card is raising questions over the future of a very familiar piece of phone tech ...

You don't need a SIM card and cellular service to use most features of today's iPhones and Android phones. Most apps and services run just fine as long as you have access to WiFi, and you can even set ...

A SIM card, or subscriber identity module card, is essential component of any phone. It connects your device to a cellular network and stores vital information, including your phone number. Many ...