A 3G data card is a device that connects to a computer to allow access to the Internet using the high-speed data services offered by cell phone companies. 3G data cards normally connect to a USB port, but some 3G radios are built into laptops from the factory.
Features
3G data cards offer near-broadband speeds for computer users who must access the Internet on the go. Many offer GPS services as well, which can help travelers who are in unfamiliar cities.
Benefits
A 3G data card can turn any place with a cellular signal into a Wi-Fi hotspot. Even if you are away from your hometown, most cellular carriers have extensive roaming agreements in place for 3G data cards.
Types
3G data cards can connect directly to a computer via USB, or they can function wirelessly, creating a mobile hotspot that can be accessed by multiple devices simultaneously.
Considerations
Although 3G data card speeds are slower than home and broadband connections, they provide a worthy alternative for users who require an always-on Internet connection on the road.
Warning
Although some 3G data card plans are advertised as "unlimited," all American carriers impose a five gigabyte-per-month limit on 3G data transfers. Any use in excess of five gigabytes will result in per megabyte overage fees.
Tags: data cards, data card, access Internet