On arriving in Brno one of the first things you will want to do is get a Sim card for your mobile (cell) phone and obviously you will want to have the best deal around.
The main suppliers in Czech Republic are 02, Vodafone and T-Mobile each offering different rates and options.
Things to watch out for are suppliers giving away free SimCards as, though they are free they are often not the supplier with the cheapest rate.
Most students in Masaryk University use Vodafone due to their numerous offers and cheapest rates. Also it should be noted that seeing as most people in Brno use Vodafone, this will make your calling them also cheaper.
Vodafone.cz can be looked up to find out more about the rates and also the Vodafone Park which is a very useful online tool letting you both store your contacts online (for safe keeping) but, also to send free texts from.
Normally Vodafone rewards its buyers with free texts when buying certain amounts of credit further making calling cheaper.
Depending on the location of your accomodation, you generally have two options for internet supply; UPC (fast internet) or a standard 02 connection (please see their website for further information)