A multi-carrier GSM phone with two, three or four SIM cards. Dual-SIM phones are popular with global travelers who use local and foreign carriers as well as people who want a business and personal ...

SIM cards have become a universal aspect of modern smartphone usage, but the technology and meaning behind the name dates more than three decades.

SAN FRANCISCO, Calif. — Aram Hardy lives in Moscow. But as a tech entrepreneur, he travels all over the world and,in fact, is planning to move to California. To juggle between the two worlds he lives ...

Two weeks ago, I kvetched about my wretched existence of having to carry two separate mobile devices for Voice and Data use -- a regular 3G cellphone and my inseparable BlackBerry 8820. Apparently, ...

The ability to have two phone numbers associated with one phone is hugely popular in places like India and China. With dual-SIM cards, users can switch between a phone number for work and another for ...

While most people seem to manage just fine with a single SIM card in their smartphone, some -- especially travelers, who can save money by fitting a local SIM card into their handset -- love the ...

Using two SIM cards, or enabling a dual-SIM setup, can be helpful when you need two separate phone plans on a single device. It easily lets you consolidate personal and work numbers on one phone, for ...

In another line of firsts for Google's Android mobile operating system, General Mobile is likely to launch a new Android handset that will support dual SIM cards. SIMs or Subscriber Identity Modules ...

If for some reason you find yourself toting around one cellphone and two sim cards at the same time, you might want to look into purchasing a dual sim adapter like the one on the right. The Powerful ...

Dual-SIM wireless phones have been introduced by Nokia and LG Electronics for use in countries outside the U.S. The question remains whether they or other dual-SIM phones will ever catch on in the U.S ...