Just something I picked up from a DJI Tech. This really works well with the Phantoms and I would imagine it will be the same for the Inspire. Always put your phone or tablet in "Airplane" mode. This will cut down on interference from the Cell Sites. I have found it to double the range when I am close to a Cell Tower. The Airplane mode leaves your Wi-Fi in tact and turns Text and Calling off. You gain a much cleaner signal from the Quad. Just want to pass this along as it really helps me in RI with a ton of Cell Sites around.
I don't know what you have? On my Apple products, "Airplane Mode" shuts dow just the Cellular so no phone contact or text. Everything else still works, the Wi-Fi and Bluetooth.
Airplane mode disables all antennas (Bluetooth, WiFi, and cellular). You can manually renable Bluetooth and/or WiFi once Airplane mode is enabled but the cellular antenna will remain disabled. This is true for every modern iOS device.