What is the internet coverage like with CoreESIM along the Mullerthal Trail (Little Switzerland)?

CoreESIM generally provides reliable signal at the trailheads and in villages such as Echternach within the Mullerthal region. However, due to the unique topography of deep rocky gorges and dense forestation characteristic of "Little Switzerland," signal strength may diminish or become intermittent in secluded sections of the trail. It is advisable to download offline maps or critical information before venturing into the more remote areas.