https://goo.gl/oZPL5
By far, our greatest concern with Home is the impact that it could potentially have on data usage, since it dynamically updates Facebook's news feed in the background. Fortunately, Facebook includes a three-tier data usage and image quality setting (high, medium and low) that lets you adjust the amount of information streaming into your phone. The toggle becomes handy for smaller data plans or if you're getting close to your limit, but oddly a WiFi-only option isn't available -- we'd like to see this added in an update sooner rather than later. Why? In our testing, we consumed 93MB in four days on the medium setting; at that pace, Home would snatch up 698MB in a month. Think about it this way: if you have a 2GB plan, Facebook Home would take up more than one-quarter of your data allotment, on the medium plan alone. Now imagine how much the high-usage scenario destroys the average consumer's data plans. Use Home responsibly, folks.