US Mobile Messaging App Users and Penetration, 2019-2024 (millions, % change, and % of smartphone users)
An OTT messaging app provides private one-to-one or one-to-many communication between registered users via a mobile phone number or user ID, where messages and calls (voice or video) are then transmitted via data connections and the mobile web. Examples of OTT mobile messaging apps include Facebook ... Messenger, Line, WeChat, WhatsApp, Skype, and iMessage. Anonymous social sharing apps like Whisper are not included, because communication within these apps is “broadcast” in nature and users are anonymous. Also excluded are apps that solely provide OTT voice/video calling, and social networking apps such as Twitter and Instagram that offer private messaging capabilities as a secondary feature. More
Estimates are based on the analysis of survey and traffic data from research firms and regulatory agencies, the growth trajectory of major mobile messaging apps, historical trends, internet and mobile adoption trends, and country-specific demographic and socioeconomic factors.