A survey of 500 people in Vietnam found that Facebook Messenger was the most commonly used messaging service, with 87% of respondents using it. 77% used Facebook Messenger on a daily basis. The survey also found that 46% of respondents used social networking messaging services for 3 or more hours per day, and 82% used them for over an hour per day. Facebook Messenger was most popular across age groups and gender, though some differences were noted, such as males preferring Zalo and females preferring Yahoo!.