Information about 4G..

In telecommunications, 4G is the fourth
generation of mobile phone mobile
communication technology standards. It is a
successor of the third generation (3G)
standards. A 4G system provides mobile ultra-
broadband Internet access, for example to
laptops with USB wireless modems , to
smartphones , and to other mobile devices.
Conceivable applications include amended
mobile web access, IP telephony , gaming
services, high-definition mobile TV, video
conferencing, 3D television , and cloud
computing .
Two 4G candidate systems are commercially
deployed: the Mobile WiMAX standard (at first
in South Korea in 2006), and the first-release
Long Term Evolution (LTE) standard (in Oslo,
Norway and Stockholm, Sweden since 2009).
It has however been debated if these first-
release versions should be considered to be 4G
or not, as discussed in the technical definition
section below.
In the United States, Sprint Corporation
(previously Clearwire) has deployed Mobile
WiMAX networks since 2008, and MetroPCS
Communications was the first operator to offer
LTE service in 2010. USB wireless modems
have been available since the start, while
WiMAX smartphones have been available since
2010, and LTE smartphones since 2011.
Equipment made for different continents is not
always compatible, because of different
frequency bands. Mobile WiMAX is currently
(April 2012) not available for the European
market.