Manage a Joint Certificate Information guide PC → Mobile phone copy Mobile phone → PC copy The post office's Smartphone Banking service is provided using a joint certificate to ensure secured transactions. To copy a joint certificate to a PC, a smart device with a joint certificate must be prepared. ※ For customers who have signed up through Smart Banking, use it after going to 'Smart Banking/ Banking Info. Mgmt/ Banking Usage Mgmt/ Internet (PC) Permission Settings'. Copy (import) the joint certificate on the Smart Savings app. Manually install the program to copy (import) a certificate. Step 1 - Mobile phone 1 Running the Smart Savings app 2 Option to export certificate 3 Verification code Step 2 - PC 1 Enter the verification code generated on your mobile phone 2 Make a copy of the certificate. 3 Complete exporting of a certificate