I have a Samsung Note 3, and T-Mobile service. Is there a way to have my phone be on my home wifi network, but still use 4G for my internet service? I live outside the city and have slow, metered satellite internet service at home, but great 4G TMo service. I would like to be on my home network so I can access files on my server, control the Sonos, lights, etc, but still access teh web, youtube, etc, using my 4G service on the phone. Is this possible through a setting or an app? Or is wifi all or nothing - if connected, you cannot use 4G internet? Cheers, Carl.