First of all, you need to fill in the telephone area code of your work unit according to the actual city. The area code of each province (autonomous region or municipality directly under the Central Government), special administrative region, prefecture-level city and major international city is different. If you don't know, you can check the area code online.

Secondly, it is necessary to fill in the telephone area code of your company truthfully, and it is best to fill in the landline number of your company, which can show the stability of the applicant's work and income source and help the successful application of credit card.