Will the eSIM work if I cross into Saudi Arabia via the King Fahd Causeway?

The ETravelSim Bahrain eSIM is for Bahrain only, so data stops the moment you cross the King Fahd Causeway into Saudi Arabia. This matters because day trips and weekend trips between Manama and Eastern Province cities like Dammam and Al Khobar are common. For combined Bahrain + Saudi trips, ETravelSim sells a separate Saudi Arabia eSIM you can install on the same phone, switching the default data line at the border. Your home SIM stays in place throughout.