text: how we will know our mb/gb consumption?   the service provider usually provides you the facility of keeping track of your mb/gb usage. you can also call their helpline to know the same at any time. if you would like to personally monitor the usage yourself, you have softwares like du meter ( http://www.dumeter.com ), net traffic meter, bw meter ( http://www.desksoft.com/bwmeter.htm ), etc.