He said no service at all. When traveling, and you have an old phone with eSIM support, carrying it with you in a backpack (with eSIM information ready to go) i

He said no service at all. When traveling, and you have an old phone with eSIM support, carrying it with you in a backpack (with eSIM information ready to go) is a good idea. Especially when traveling alone, you never know what will happen. Your primary phone can be stolen, you drop it, or it simply dies and you need rescue.