From concept to life: The ultra-thin TECNO SPARK Slim is becoming a reality

Ultra-thin phones often make for eye-catching tech demos, but they rarely make it to market. That’s not the case with the TECNO SPARK Slim. First revealed as a concept device earlier this year, TECNO has confirmed that it plans to launch a global production model in the second half of 2025.

That means this isn’t just a design experiment — it’s the beginning of a new product trend built around what TECNO calls “millimeter-level” slimness.  Unlike past concept phones that sacrificed practicality for style, the SPARK Slim Concept is designed to be both stunningly thin and functionally excellent. At just 5.75mm thick, it will be the world’s thinnest smartphone to pack in a 5,200mAh battery — a feat that TECNO says redefines what’s possible in ultra-slim smartphone design.