Possibly depends on the MVNO and the type of contract they got with the MNO. On Ting you are definitely exempt, other MVNOs, not so sure. However, my understand

Possibly depends on the MVNO and the type of contract they got with the MNO. On Ting you are definitely exempt, other MVNOs, not so sure. However, my understanding is that MVNO traffic has lower priority in the MNO traffic shaping, so you get affected if there's congestion.