Hi @wuning111888,
Sorry to know that you've had issues in using your mobile data.
I've since checked your account and based on your recent interaction with one of our Mobile Helpdesk specialists, your allotted data has been exhausted hence the loss of internet access.
I can see that a top up has been made yesterday allowing you to continue using your mobile service. Everything should be up and running again however should you still require further assistance, please feel free to let us know.
Regards,
Ahra_G
