A method for connecting a secure element to a network of a mobile network operator and corresponding secure element

A secure element containing software comprising instructions for performing the following steps for connecting said secure element cooperating with a device to a network of a first mobile network operator with an ephemeral first IMSI, said first IMSI being stored in said secure element, in order to get a second IMSI, from said first mobile network operator, said steps comprising:

• A—Selecting by said device a first radio serving network after executing a 3GPP network selection procedure, said first selected network being not listed in Forbidden VPLMN list of said secure element;
• B—Sending by said device a REGISTER REQUEST message comprising said first IMSI to said first selected network;
• C—If said first selected network does not route said message to said network of said first mobile network operator, stop trying to register with said first selected network (VPLMN) and put the MCC/MNC codes of said first selected network in said Forbidden VPLMN list of said secure element;
• D—Searching by said device for a another network with the 3GPP network selection procedure to register with;
• and
• E—Repeat steps A to D until a network routes said first IMSI to the network of said first mobile network operator.