You no longer have to worry about the SIM card
The SIM card is part of the camera. You no longer book a data volume, but buy a picture quota (COINs= certain number of pictures) in advance. Activation or other administrative efforts are no longer necessary.
The COINs have no expiry date
Once purchased, they can be used indefinitely Unlike prepaid data volume: this expires after a certain time
Multiple cameras with one COINs contingent
Pooling: Use your COINs for several cameras. For example, you have 3 cameras and 4,000 COINs. It doesn't matter which camera now sends the pictures. It is only debited from this account.
You always see the exact number of your COINs and know how many images can still be sent.