Does SimRush need line of sight?
No, it does not require line of sight. But where possible it is preferred.
The mobile network works differently to WiFi as it is a lower frequency (between 700MHz and 2100MHz) which means it can penetrate through obstacles better than conventional WiFi.
For best results having a clear path between the Outdoor unit and the mast is preferred, e.g. clear of trees and buildings along with some height where possible – for example on an existing TV Pole at the top of the property.