What happens after 2GB data is exceeded
Speedtest seems to be unaffected with speeds running up to 40 or even 50 Mbps. If you do video streaming using youtube, you will noticed that you can’t get a smooth stream at 720p as the 1 Mbps kicks in after you consumed the first 2 GB of the day.
Reducing the resolution to 480p solves the problem. After midnight, you will again be allocated 2 GB of high speed access.