Buy MAGICSIM Elite - Dual SIM Adapter for your Galaxy S8
Samsung Galaxy S8 Plus Dual-SIM 64GB (GSM Only, No CDMA) Factory Unlocked 4G Smartphone - International Version - Midnight Black : Buy Online at Best Price in KSA - Souq is now
Samsung Germany's Galaxy S9 support page hints that Dual SIM feature is coming to Europe - PhoneArena