Major wireless carriers: A necessary evil if you travel a lot, have a family, or are just interested in coverage that’s reliable and widespread. AT&T is the third-largest provider in the US (first for 5G) and has the largest coverage map. I’ve had various AT&T plans for more than a decade, first for just myself and now for my whole family, even though I only get one cell bar at my house and have to stand in a 5-square-foot patch of yard to make a phone call. I’ve also lost entire days of my…