4G LTE is experiencing rapid global growth, with LTE subscriptions increasing over 3.6 times from 2012 to 2013. It provides significantly faster speeds than 3G, with downloads taking less than 25 seconds for a 20MB file versus over 3 minutes on 3G. LTE also offers a better quality of experience for activities like streaming HD video with little to no buffering. Various industries are also adopting LTE connectivity, such as media broadcasting live news over LTE networks, telemedicine using LTE to transmit patient health data remotely, in-vehicle connectivity through car hotspots, and virtual classrooms with HD video conferencing between students and teachers.