Your smartphone is addictive. Do you need to \u201cMarie Kondo\u201d your apps, put down the phone altogether, or use it as a \u201cdrug\u201d dispensary? DnA takes a tour of hidden LA bars that ban phones, talks with a computer scientist who recommends \u201cdigital minimalism,\u201d and meets an app entrepreneur who wants to relieve anxiety with \u201cdigital drugs.\u201d