Population and sample the study is using a mobile phone, two categories (prepaid and postpaid). In the three main network (AIS, Dtac and TrueMove) in Bangkok and Thailand's six regions.
The sample population and is the second type of mobile phone users (prepaid and postpaid) in three major networks (AIS, Dtac and TrueMove) in Bangkok and six regions of Thailand.
Population and sample of study, is a mobile phone user, the 2 types (prepaid and postpaid) in 3 main network AIS Dtac TrueMove (, and) in Bangkok, and 6 Thailand regions.