The 4G means fourth-generation wireless service, which provides faster speeds for smartphones and similar mobile devices. The 4G network is one step above the 3G network. Long Term Evolution is the technological standard that creates high-speed cellphone service in 4G networks.
Most cellphone companies offer 4G wireless services as of 2015. The 4G network is four to 10 times faster than the more common 3G network. Some companies claim that the LTE can deliver between 5 and 12 megabits per second for customers who use the 4G service. The 4G network is available in limited areas in the United States.