You don’t have to turn it on, it depends on your needs. The fact that you can receive a platinum invitation letter proves that your qualifications in the bank are high-quality and you are a big customer. If you often shop and need to swipe a card, you can activate it. The invitation letter is not a card, and you need to go to the bank to apply for a card. The process is the same as an ordinary credit card. , there will be a user guide at that time. In your case, the bank branch intercepts the credit card application. Haha