As indicated in the Glossary mobile learning concerns the delivery of educational material to any mobile electronic device. This includes, laptop computers, electronic notebooks, personal digital assistants (PDAs), and mobile phones. A list of Mobile Learning Authoring Tools can be found here.
The first video below is a one-minute introduction to the delivery of educational content to mobile phones (in this case, the iPhone).
One very simple educational use for mobile phones is the delivery of flash cards, enabling students to test their knowledge of basic facts and concepts. For example, someone learning the elements of the periodic table might see the word "Actinium" on one side of a card, try to remember what the symbol for this is, then flip the card to see the correct answer: "Ac". One easy-to-use flashcard application for mobile phones is StudyDroid, which is a free application for phones using the Google Android operating system. A video is available here:
Applications may also be available for other phone operating systems. The one shown above can be shared with other users. Flash cards can be created by anyone, educators or students.
The following videos provide an introduction to mobile learning. Although the onscreen text refers to free downloadable software, I presume this is available as a temporary trial, as this is what is indicated at the website of the company in question. The following videos are not intended as an endorsement of the product, simply as an illustration of mobile learning. There are various mobile learning software packages available, as can be found by typing the appropriate search terms into your search engine.