Gadgets
The World’s Thinnest Phone Has Been Revealed
The Spark Slim slides in with the thinnest dimensions to date.

Tecno has unveiled its Tecno Spark Slim, which is officially the world’s thinnest smartphone.
Revealed at the MWC 2025, the Spark Slim concept offers a sophisticated and ergonomic feel with an ultra-sleek 5.75mm profile, a 6.78-inch 3D Curved AMOLED display with a 1,224P resolution and a 144Hz refresh rate.
Despite being that thin, the Spark Slim is powered by a powerful 5,200mAh battery, which is a pretty substantial size for such a small phone, along with 45W smart charging capabilities.

It also features a dual rear-camera set-up comprised of two 50MP cameras, along with a 13MP front-facing camera.
The camera design is an interesting one too, with them being at the top of the phone on either side of the device, with rounded edges on the device itself.
There were no clear specifications as to what the phone has as its hardware internals, and whether the Spark Slim would ever make it to store shelves in its current form, but it’s an interesting design nonetheless.
Header image source: GSM Arena