Abstract: Migration events such as switching from one smartphone to another, switching from one mobile carrier to another, and/or switching from one Internet Service Provider to another are monitored and reported. User account based applications that are installed on the smartphone or other electronic device of the user or are web based and accessed by the electronic device of the user gather information related to the migration. The information for a given user account is obtained from the application from time to time and compared to prior information that has been received for the same user account to detect differences resulting from a migration event. The migration events may be recorded in the aggregate and reported to reveal trends.