How much traffic does it take to watch a football match on the mobile phone?

The amount of traffic consumption is related to the quality of the film source. Suppose it is a normal live broadcast, it may be tens of megabytes. If it is a fresh live broadcast, it may be more than one hundred megabytes. If it is a high-definition live broadcast, it may be hundreds of megabytes or even 1G or more.

You can watch it for a period of time, say 5 minutes, to see how much traffic pptv generates, so the traffic of the whole game is ≈ total time /5 * 5 minutes.