Mobile phones and PDAs are no longer just for chatting and organising contacts and diaries, they are now pocket-sized computers and as such have the ability to deliver learning objects and provide access to online systems and services. However, network infrastructure has not quite kept up with handset development, users’ expectations or industry hype. As a result, bandwidth is not yet good enough for substantial online learning and coverage and signal problems are still barriers in many areas and when travelling. Therefore, a mixture of online learning and learning using materials downloaded onto handheld devices for use offline is necessary.