Exactly!! Thx, Krypton!!
That day, I was in a hurry to type that response and hope the poster can think thoroughly before making decision to join the wireless broadband contract. Many of my friends, including myself, regret joining that contract (vodafone) for 2 years as "Disconnection" is often found.
Also, in DB, problems can even be worse as there are too many natural barriers here to interfere the connection and signal transmitting. So, in DB, if you cannot get good cell phone reception at home, wireless modem is not recommended based on my experience. I spend $ 180 every month and connection always fails (99 % zero reception )and I have to use this service until the end of the contract( 2 year). Handling charge $ 1600 is needed to break the contract.