This TS defines the interface between the UICC and the Mobile Equipment (ME), and mandatory ME
procedures, specifically for "USIM Application Toolkit".
It refers in its majority to the ETSI (SCP) TS 102 223
, which describes the generic aspects of
application toolkits within the UICC.
USAT is a set of commands and procedures for use during the network operation phase of 3G/LTE, in addition to those defined in TS 31.101
This TS defines for 3G/LTE technology:
the application protocol;
the mandatory requirements on the UICC and ME for each procedure.