The present study provides an illustration of how m-learning may be applied in school science contexts while simultaneously evaluating the accuracy and reliability of mobile phone functionality relating to the measurement of sound. The aim of this study is to report on the use of mobile phones as data collection tools in the context of a science inquiry project suitable for primary and secondary schools. This aim will be achieved by illustrating the inquiry processes we engaged with in evaluating the accuracy and reliability of different mobile phones compared with a traditional decibel meter from our science lab. We will then outline how this application may be applied in junior secondary (Year 9) and primary (Year 5) science contexts.