India, March 3 -- Smartphone companies have started a new trend of bringing powerful slim phones with Samsung and Apple being the biggest competitors in the race. While we were busy talking about Apple's iPhone 17 Air and Samsung Galaxy S25 Edge, Tecno revealed the world's thinnest smartphone, the Spark Slim, with just 5.75 mm of thickness. Not much about the smartphone has been revealed, but the company will showcase the new Tecno Spark Slim at the MWC 2025 with more details about its specifications and features. Not only is it the slimmest smartphone, but it also packs a large battery and a camera setup, which may attract buyers. However, the Tecno Spark Slim comes with a catch, which may come as a shock to tech enthusiasts. Therefore, ...