As for the credit card limit, it depends on the credit status of your friend’s card and the approval of the card issuer. For example, some people have high credit limits. The overdraft limit is high. If you feel that your overdraft limit is not enough, you can also deposit money into it, so that you can deposit more and spend more.

You don’t need a password when using your credit card abroad. Just use signature. This is generally true. In fact, in China, UnionPay is used to set credit card passwords, not visa or master in the true sense.