First, can the wife find out?
Nowadays, many people may apply for credit cards, because everyone thinks that credit cards can help themselves to some extent, and credit cards do play a lot of roles in people's lives. And some people don't handle credit cards for daily payment at all, and they don't use them as transfer tools. The reason why these people apply for credit cards is to cash in.
Now that you have tied your credit card to your own, your wife certainly doesn't know that there is a credit card on your mobile phone, but if your wife knows that you still have a mobile phone, she will definitely look at your mobile phone, so that your wife will know that there will be a credit card on your mobile phone. If she knows your credit card account number, she can also go to the bank to check it.
Second, the specific introduction and analysis
Moreover, people should pay attention to some things when using credit cards. Never use credit cards to do illegal things, because in real life, many people think that credit cards can bring them many benefits, because everyone thinks that they can cash out with credit cards, and many people actually use credit cards to swipe their cards. Actually, this is illegal operation.
Therefore, everyone must use credit cards correctly in their lives. You and your wife are the closest relatives. You don't have to hide anything from your wife. So if you do something with your credit card, you must tell your partner and never keep it from your wife. And you didn't do anything else with your credit card, so there's no need to hide it.