Now, this is an important point of discussion. Most of the time, it is seen that just because broadband advertises the requisite speed doesn't mean the end customer gets that.
Thus, to check the speed of your internet connection, speed tests are mandatory. There are various online sites today where you can test the speed of your net. This will help you make an informed decision before signing up for a deal with the company.
Also, when you are testing the speed, try closing all other tabs and then test. Most of the time, reputed companies like T-Mobile, Online Internet, and even Youfone provide the displayed speed, but to be double sure, it is important to check the speed.