I'm wondering whether the 4G radio is actually turned off when I'm using WiFi? Even though WiFi is running, the 4LTE icon is displayed. It may be white or blue. Recently, I installed Data Switch which enables/disables data. The 4LTE icon is not displayed when Data Switch disables data. I've noticed an increase in battery charge when I keep the 4LTE off with Data Switch, leading me to believe that normally the 4LTE radio is still on when WiFi is running. I'm I wrong?