In the United States at least, 4G LTE connectivity is pretty much ubiquitous, and unless you live out in the sticks, you should have access to some semblance of high-speed internet on your smartphone (or even in your car these days, many of which include hotspots). In addition, 5G networks around the country are being built out by AT&T, Verizon,

Source: Hot Hardware – Can You Hear Me Now? NASA Funds Nokia Efforts To Offer 4G LTE Service On The Moon