<p>➀ The article discusses the emerging trend of smartphone manufacturers competing to produce the thinnest handsets, reminiscent of a classic Saturday Night Live sketch.</p><p>➁ Tecno's Spark Slim prototype is highlighted as the 'world's slimmest' smartphone with a 5,200mAh battery and a profile of just 5.75mm.</p><p>➂ The article compares the Spark Slim's thickness to other leading smartphones and foldable models, noting its impressive thinness despite the battery size.</p>