Are there any tools (websites, apps, etc.) that help determine the best mounting location and azimuth/angle of a MG41? We are evaluating the MG41 to determine if it will fulfill our broadband needs at a small office. It would be easier to mount the MG41 in an office room, but we could put in a work order to mount it on the roof. We are also trying to determine if a MG41E (with its external antennas) would provide better performance. We may have sim cards from 2 different providers, to get a more robust and diverse source connection. Are there iOS apps that determine cell data direction and signal strength?