This study aims to understand the information and communication technologies (ICT) adoption background, specifically related to electronic mobile devices in the context of their application in the provision of public services to Brazilian citizens and their relationship with the State. To this end, the research sought to develop an unprecedented model of adopting innovations based on the Innovation Diffusion Model (Rogers, 2003), adding constructs adapted to the context of the citizen s relationship with the Brazilian government. Based on the theory, hypotheses that explore which factors are capable of impacting the general attitude of adoption were formulated. The proposed model, was subjected to a cross-sectional survey, resulting in 666 valid records from a convenience sample. The data obtained were analyzed using structural equation modeling (SEM). They confirm most of the hypotheses formulated and present significant relationships between the constructs relative advantage, compatibility, complexity, convenience, quality of service, trust in the government and intention to adopt in the general attitude of adoption, suggesting that the proposed model represents an advance in understanding the factors that influence the Brazilian citizen general attitude of adoption related to m-government.