The ETravelSim Oman eSIM works at most established Wahiba Sands tourist camps and along the main desert tracks, but signal drops or disappears deep in the dunes away from camps. This applies to every Omani carrier and is a function of desert geography. If your camp is among the well-known Wahiba operators (1000 Nights, Desert Nights, Sama Al Wasil, Arabian Oryx), expect connection at the camp itself. For dune drives away from camps, treat the trip as offline.