The obvious answer is phonelessness. Sure enough, that's what the paper linked to in the article says: 3.4% of households surveyed did not have a phone. http:

The obvious answer is phonelessness. Sure enough, that's what the paper linked to in the article says: 3.4% of households surveyed did not have a phone. http://www.cdc.gov/nchs/data/nhis/earlyrelease/wireless201512.pdf http://www.cdc.gov/nchs/data/nhis/earlyrelease/wireless20151...