Philip Elmer-DeWitt, quoting a Piper Jaffray survey update:

Apple’s share of smartphone ownership was unchanged in the Piper Jaffray Taking Stock With Teens survey. Of ~8,500 respondents, 82% have an iPhone, the highest percentage we have seen in our survey. The iPhone may have room to move higher, however, with 86% of teens anticipating their next phone to be an iPhone, the highest ever recorded in our survey (up from 84% in Spring-18). Android was the runner up with 10%, down from 11% in the spring.

This is US teens, not world-wide ownership. But strong news for Apple, increasing their hold on the next generation of (well heeled?) phone buyers.