The total number of mobile subscriptions worldwide reached 7.9 billion in Q1 2018, up by 94 million in the quarter, according to the Ericsson Mobility Report, which would equate to a 104% penetration rate. Of course, the figure reflects multiple mobile subscriptions held by many individuals, thus accounting for the fact that hundreds of millions of people do not have mobile service for economic, geographic, or other reasons. Ericsson estimates that...