If you would like to gain access to your online account, view your itemised billing, and have access to 24/7 Customer Service and Technical Support, register your sim here. A SIM card or subscriber identification module is a data storage that contains various mobile information such as contact lists and text messages. It’s your cellphone’s connection to a network.
For the most part, the only time you'll need to access your SIM card is when you do it with a paperclip – you know, to push the tiny button, pop your card out and slide it into a shiny new phone. That's because SIM cards, which are essential for securing your phone and linking it to your personal number and service provider, actually store a very limited amount of information (mostly notably, your contacts). If you're still rocking an older SIM and your popularity is so off the charts that it's time to clear up a little space for contacts, you can access that data, but the process depends on whether you have an Android device or an iPhone.