A mobile device is a small item of technology that a user can easily carry with them wherever they go. Typical mobile device examples include mobile phones, tablets and laptops all of which have great benefits for both leisure and work purposes. Mobile handsets and devices do not need an external power supply to work. Most if not all modern mobile handsets and devices contain a rechargeable battery to hold electricity in order work without electric wires, which means when purchased they often contain both the device handset and a charging cable.