iPhone has like a 33% market share so I wouldn't call it common if you can't reach 2 out of 3 people on it at least. In contrast, in many European countries Wh

iPhone has like a 33% market share so I wouldn't call it common if you can't reach 2 out of 3 people on it at least. In contrast, in many European countries Whatsapp has 90%+ penetration [1]. Even where it's relatively unused it's more common than iMessage. [1] https://www.statista.com/statistics/1311229/whatsapp-usage-messaging-app-users-by-country/ https://www.statista.com/statistics/1311229/whatsapp-usage-m...