3G was introduced in the early 2000s. Depending on where they are, 3G phones vary in speed between about 200kbit/s to 14Mbit/s (megabits per second). This is comparable to a DSL or low end cable modem speed. Most smart phones use 3G technology to make them fast enough to practically use internet and other data features. Faster 4G networks operate in many places, with speeds estimated as fast as 100Mbit/s to 1Gbit/s (gigabit per second). This is as fast as some computer networks that use ethernet. Many smart phones introduced after 2010 use 4G technology including LTE, as later, even faster version. 5G was introduced in a few places in 2019.