Magical Phones are heart-shaped devices given to a Magical Girl when they first transform.
Magical Phones are used to transform into a Magical Girl and back. They appear to have the features of a typical smartphone, such as texting, photographing and access to the internet. They also have a function to detect Magical Potential within a certain radius. Each one also contains basic information about the powers and capabilities of its owner, as well as a stylized picture of their Magical Girl form.
Magical Phones were invented by the Research and Development Department relatively recently in Magical Girl history. Different models of Magical Phones exist; of particular note is the "Administrator's Phone", Magical Phones designed to withstand extreme circumstances and able to be linked to Magical Girls during selection tests. Cyber Fairies also reside within Administrator Phones.