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How to change Jincheng citizen code into mobile phone number
1, first open the Jincheng citizen code APP online, and click mine after logging in.

2. Secondly, open the settings in the upper right corner and click Account Security.

3. Finally, click the account to cancel, and then log in and register again. Take the citizen card and ID card offline to the credit union to modify the reserved mobile phone number, and then go to the bank to apply for an ID card.