Understanding Internet Data Usage for IPTV
Although it depends on the quality of channels, watching IPTV for one hour is roughly equal to downloading a video file with one hour of length. Assuming the size of one hour of video varies between 500 to 800MB, this will give you an estimate of how much Internet data is needed for watching IPTV. Accordingly, if you plan to watch IPTV two hours a day, you will need at least 30GB of data traffic per month.

Estimating Your Data Needs
To get a clearer picture of your Internet data needs for IPTV, consider the quality of the stream and how often you watch. Higher quality streams will consume more data, so adjust your data plan accordingly to avoid interruptions.