When is the calculation of cell phone data capacity based on?

I know that the cell phone data capacity is calculated every month.

When exactly is it based on?

Is it based on the fare date?

Or is it based on the 1st of every month?

947 2017-05-14 Gentleman

popular Why does it say that your license has expired on your phone?

popular Can I listen to music with Bluetooth earphones on the plane?

popular What is the deadline for purchasing lotto?

popular What is the nationality of Minnie?

popular How can I resolve TLS security configuration errors?

Same Tag What do you think about the Hongmi series?

Same Tag Is it possible to recover deleted text messages?

Same Tag If I turn off my phone, will the battery not run out at all?

Same Tag Is there a way to check how much data I spent on my phone last month?

Same Tag What app should I use to block cell phone advertisements?

Same Time Is it better to install a vaccine program on your phone?

Same Time When is the calculation of cell phone data capacity based on?

Same Time What's the name of the mask that covers your face well?