OK so this might just be a coincidence but my phone drops calls and throws a no simcard notification when I'm on the southeast side of Indianapolis Indiana near where homeland security took over an old state highway facility and erected some sort of cell tower looking thing. I travel a good bit of the state and this is the only place Ive ever had an issue.. Tin foil hat time? Im thinking maybe some non standard signals from the tower in the homeland security place but I really don't know what I'm talking about lol. Probably gonna get on a list for even posting this