Is the credit displayed in the top left the total credit?
Yes, the credit you see in the top left of the IoT portal is the total available credit in the account, which can be used by all associated SIM cards. To check the available data traffic for each individual SIM card, you can view the SIM Card List, where you will find the data traffic details for each SIM. Additionally, data traffic can also be checked in the details of each specific SIM card.