What is DataESIM's internet coverage like in Portugal's Douro Valley wine region?

DataESIM users will experience generally strong coverage within and around the main towns along the Douro River, such as Pinhão, which are key hubs in Portugal's wine region. However, due to the valley's mountainous terrain and deep river gorges, signal strength might fluctuate or temporarily drop when traveling by train or boat between more isolated vineyards. For critical tasks, plan to utilize connectivity within established village areas.