When cell phones became popular in the 1990s, sending and receiving SMS (Short Message Service) text messages was expensive for Americans.
Later, services improved and mobile phone companies began offering unlimited calls and free SMS plans, which made the option of sending and receiving text messages very popular.
The use of other messaging applications is not uncommon in the US, but several were consolidated in the market before WhatsApp.
According to data from the market analysis platform Statista, Facebook Messenger is the most used option (87%) by Americans. Messaging apps FaceTime (34%), Zoom (34%) and Snapchat (28%) are also above WhatsApp (25%).