The SE provides the same functions as the chip on smart payment cards. The
SE is in the form of a universal integrated circuit card (UICC) (SIM card), a microSD card or an embedded SE in the phone circuitry. Access to the SE to host third- party applications or to store sensitive data for these applications must be requested from the mobile device manufacturer for embedded SE and from the mobile network operator (MNO) for the SIM card.