You will soon be able to import into Lightroom on iOS directly from external storage
(Digital Photography Review)

Adobe has given the public a new sneak peek at a future update for Lightroom on iOS that will simplify the process of importing images into the app. As demonstrated in the above video, Adobe will enable users to directly import images from card readers into Lightroom on iOS, after which point the content is uploaded to the cloud and added to the app`s photo library. The `seamless importing experience` will arrive in a future Lightroom update starting with iOS 13.2, according to Adobe`s Tom Hogarty. The company doesn`t provide an exact release date for this update, but says that it will arrive `soon.`