data firewall

Infopackets Reader Sam G. writes: " Dear Dennis, I work from home and also own an Android smartphone, which I use to communicate (via text messages) with friends and family. Because I am home all the time, I use WiFi on my phone instead of data. ... Therefore, I purchased a very cheap 'pay as you go' data plan for when I'm away from the office. The problem is that my data is being eaten away by apps on my phone whenever I'm on the go. I have tried disabling 'background data' on my Android phone to limit which apps can use data, but this is incredibly time consuming because each data permission is ... (view more)