I have a Galaxy S6 and recently bought a Sony blueray player. I've downloaded the apps on the phone for my favorite TV networks and have been screen mirroring the shows I watch onto my tv with the blueray player. The problem is that I have noticed when I'm screen mirroring it eats up my mobile network data instead of running off my home wifi network. When the two devices aren't paired they both run off my wifi just fine. How can I stop this from eating my data? I am proficient in the use of my S6, but not a tech-savvy person, so I wasn't sure if there was something in the settings I need to change. TIA