Applying for a credit card online does not require an interview. It mainly depends on whether the user is applying online for the first time. If it is the first time the user applies online for this bank, an interview is required.
The cardholder needs to activate the credit card before he can use the credit card normally. The interview is mainly to ensure that the credit card holder and the applicant are indeed the same person, and to prevent others from using the credit card fraudulently.
Different banks may have different rules regarding the interview. For details, you can directly consult the staff of the handling bank, and the actual regulations of the handling bank shall prevail.