SIM cards allow you to travel between phones with your phone number and data plans; when you upgrade to a new iPhone, the SIM card travels (as long as it is the same size). A SIM card is internationally identified by its Integrated circuit card identifier (ICC-ID), which is engraved on the body of the card.
1 Activate Your Free Trial!  Ton. Ton, unit of weight in the avoirdupois system equal to 2,000 pounds (907.18 kg) in the United States (the short ton) and 2,240 pounds (1,016.05 kg) in Britain (the long ton). The metric ton used in most other countries is 1,000 kg, equivalent to 2,204.6 pounds avoirdupois.
The metric ton (also known as tonne) equals to 1000 kilograms and used in the metric system. The abbreviation is T. If you are trading internationally, you must know what type of ton as a weight unit is used in that country to avoid the surprises. Pound is a unit of mass in the imperial and U.S. customary measurement systems. International avoirdupois pound is defined as 0.45359237 kilograms.