The current methods available for text entry on small mobile devices suffer from poor performance which presents a potential barrier to acceptance and growth. Our analysis of mobile text entry indicates that the likely solution lies in aggressive use of language technology which is beyond the capabilities of current mobile devices. We argue that research in augmentative and alternative communication is highly relevant to the mobile text entry problem and offers the opportunity to research solutions that will be possible on future generations of mobile devices. Fewer input buttons, Natural Language Prosessing (NLP) and multimodal inputs are techniques applied in our design.