Mobile telephone with SIM card includes comparator for numbers written in card and phone memory, which initiates validation testing on discrepancy

摘要

A unit (71) recovers numbers written into the SIM- (101) and mobile telephone- (61) memories, submitting them to a comparator (72) which establishes whether there is correspondence or not. If not, validation testing (73) of data stored in the SIM card (10) is initiated. An Independent claim is included for the corresponding method.