It's happened again, you've got another bill from your telco. It's telling you that your mobile data usage has exceeded the monthly quota and you have hardly done anything that you can think off that uses the internet apart from browse the odd web site, use Facebook or read the odd email. This has happened a few times to several people I know, so I did some investigating. Our telco is Vodafone. After explaining that I am in the tech industry and have several failover systems that connect devices to the internet (I have ADSL, Telstra cable and Vivid Wireless - due the fact that we provide remote support and cannot be without some sort of backup connection), I was able obtain logs of what these internet hogs were. Unbeknownst to most of us, many apps run in the background and continuously upload our activities to the internet. And, some phones are set to update your apps when an update is available. You may think you're taking a photo or shooting a video on you