<p>Remember analog “brick phones” and “bag phones” way, way back in the day? <a href="https://www.lifewire.com/what-is-a-cell-phone-577492" data-inlink="Z_JqwROrZ4_Sb3pHJBBJug&#61;&#61;" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="1">Cell phones</a> began with 1G.</p>Cell phones received their first major upgrade when they went from 1G to 2G. This leap effectively took cell phones from analog to digital.Before making the major leap from 2G to 3G wireless networks, the lesser-known 2.5G was an interim standard that bridged the gap.<p>Following 2.5G, 3G ushered in faster data-transmission speeds so you could use your cell phone in more data-demanding ways.<br/><br/>This has meant streaming video (i.e. movie trailers and television), audio and much more. Cell phone companies today are spending a lot of money to brand to you the importance of their <a href="https://www.lifewire.com/what-is-3g-3426465" data-inlink="U2LP00Dhqt6NAg17L9edmA&#61;&#61;" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="1">3G network</a>. But what is 3G really and where did it come from?</p>No technology would be complete without a looming upgrade for tomorrow. What’s on the horizon for 4G, what improvements will it bring “beyond 3G” and when might we expect 4G to go live?