There are not many places to use international cards after returning home. At present, international cards can only be used where foreign cards can be swiped. The reason is that the POS machines of other domestic banks do not have the function of swiping foreign cards at present, which is also the reason why China Bank can occupy domestic high-end hotels and large shopping malls (places where foreigners haunt) for a long time.
I don't know if you will prompt this when you consume your mother's mobile phone. If you want to know, I can check it for you. My email address is 2193636 1@qq.com.
I wish you a happy use of the card. I am happy to answer any questions that can help you in the process of using the card.