Thanks for reaching out. You can monitor individual devices usage statistics going back as far as 30 days but it just shows the amount of data used. You can also turn off specific devices with the Family WiFi feature but there is no way to set a cap for the amount of data a specific device can use.
It looks like listairee was able to answer the question you had. I just wanted to follow up and see if you had any other questions or to see if you needed anything else. If you have more questions, just let me know.
As we got our resolution here, I'm going to mark this one as resolved in the next 24 hours. Thanks to all who helped and contributed. If anyone has any other needs, please feel free to let me know before the lock.
