Speech interfaces have become increasingly popular to support mobile commerce. While interface frameworks and dialogue management have been well-studied, there is a lack of analytical research on the acceptance of speech-enabled m-commerce services. In this paper, we propose a framework to explain the acceptance of m-commerce from the consumers? perspective. The framework incorporates value propositions of m-service into a service acceptance model derived from a meta-analysis. The significance of a speech interface to m-commerce is evaluated and confirmed in line with the proposed framework. Strategies for developing speech-enabled applications are also suggested.