The concept of unlocked cell phones goes like this. Carriers that operate on the Global System for Mobile Communication (GSM) such as Cingular Wireless, AT&T Wireless and T-Mobile use a Subscriber Identification Module (SIM) card. The SIM card is a microchip that stores subscriber data. It is issued by a carrier and provides cell service …
Tag: Phone
May 08
Cell Phone Hazards One Should Be Aware Of
People use cell phones all the time. It’s one of those modern devices that most people think they wouldn’t be able to survive without. In fact, if you go and ask around what’s one thing that they can’t leave home without, most would say that it would be their cell phones. That’s probably because, aside …