For GSM carriers, the current second-generation data service is known as Edge.

Even our GSM carriers aren't completely compatible with each other.

Apple will also offer an unlocked version in November starting at $649, though it will be limited to GSM carriers only.

They allow customers from other GSM carriers to roam onto their network when service from their home carrier is not available.

Compare this to the EU where each country has several GSM carriers.

In Denmark, we have a choice of 5 different GSM carriers, with some offering 7Mbps data over 3G.

The 6010 was discontinued by all major GSM carriers except T-Mobile in 2006.

AT&T also can out bid any other GSM carrier.

Just two GSM carriers does not cut it.

LTE is a completely new technology for GSM carriers.