Tecno Unveils Spark Slim, World's Thinnest Smartphone Concept, at MWC 2025

The 5.75mm-thick concept phone boasts a 5,200mAh battery, dual 50MP cameras, and a 144Hz AMOLED display, but its commercial release remains uncertain.

Tecno's Spark Slim, measuring just 5.75mm thick, is claimed to be the thinnest smartphone ever showcased, with a focus on innovative design and sustainability.
The phone features a 6.78-inch 3D curved AMOLED display with a 144Hz refresh rate, 1.5K resolution, and a peak brightness of 4,500 nits for enhanced visibility.
Equipped with a 5,200mAh battery and 45W fast charging, the Spark Slim challenges the typical limitations of ultra-thin devices, though its chipset details remain undisclosed.
The dual rear camera system includes two 50MP sensors, complemented by a 13MP front-facing camera, aiming to deliver high-quality photography in a slim profile.
Tecno has described the Spark Slim as a concept device, leaving its commercial availability uncertain, with more details expected during Mobile World Congress 2025 in Barcelona.