I've NEVER had a Flying J block my cell signal. Are you sure you don't mean WiFi? Cell signal can't be controlled by then, but they can (& many do) charge for Wifi.
They do. I have T-mobile and out in the parking lot (even 10 feet from the door) I had 4-5 bars out of 5. As soon as I went in, I had either 0 or none at all. I agree with Ralph. They do it to sell you their "premium" Wi-Fi even though it seems to never work either.
I think they all do because it's a franchise to make money on selling you their own internet. Should be illegal but pilot flying J have been known to engage in illegal activities and get away with it because they can. Big money means we pay more for stuff. Nancy k I have found that my signal greatly decreases on their property.
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