Unlimited minutes and SMS are considered as a maximum call duration of 2 hours, with calls and SMS to up to 99 different recipients' maximum throughout the plan.
...
Unreasonably Large Data Usage: The policy specifies that using a significantly large amount of data, such as around 300GB within a specific period, would be considered excessive. It’s common for service providers to set such limits to prevent a small number of users from monopolizing network resources.
Reduced Speed: If a customer exceeds the defined data usage limit, the service provider may reduce their internet speed to a slower rate, such as 256Kbps. This reduced speed is typically referred to as throttling.