LTE, or 'Long Term Evolution' , is the latest wireless mobile broadband technology that will power future 4G, or fourth generation, networks designed primarily for data transmission at unprecedented speeds. It uses spectrum to carry data traffic, just as we need roads to carry vehicular traffic. Spectrum may be likened to a highway of airwaves on which mobile signals travel.
Since LTE uses wider chunks of spectrum, data speeds on LTEbased 4G networks are nearly four times faster than on 3G. An iPad user, for instance, will be able to watch videos at LTE speeds of 300 Mbps while a laptop user will be able to download a chunky 25MB file in seconds if adequate spectrum is available. LTE is also a scalable bandwidth technology that works alongside 2G and 3G. So a 3G operator can easily upgrade his network to LTE.