I needed an internet connection and went for optus. Since nbn was not available at my house, I had to choose the mobile broadband. And I instantly regretted it. At the optus, chadstone, everywhere it was mentioned 12 mbps download speed. When I came home, after initiation process, when I tested the speed, it came out to be 4.5. On contacting the customer support, they told me my plan has a restriction that I will receive only upto 5 mbps.

So, please folks, be aware of these hidden conditions.