The superthin phone also features a 5,200-mAh battery, which means that if the device were ever to make it to market, it wouldn't have to compromise on functionality.

We got our hands on the world's slimmest phone by Tecno and their new triple foldable phones that were displayed at MWC 2025.

The TECNO SPARK Slim is the thinnest phone in the world right now, but somehow it still packs a bigger battery than the iPhone 16 Pro Max.

The major device prototype we’re waiting on is confirmed to be the Phantom Ultimate 2 tri-fold. TECNO claims the foldable is “ultra-thin” and features a Starry Optical Fiber material. MWC 2025 attendees may have a chance to see this slim foldable on the floor around TECNO’s area.

I'm not a fan of slim devices but the Tecno Spark Slim is a concept phone that I want to launch soon, given the no-compromise form.The Latest Tech News, Delivered to Your Inbox

TECNO unveils SPARK Slim at MWC 2025: ultra-thin design, 5200mAh battery, 50MP+50MP dual rear cameras, 6.78-inch AMOLED display.

With Apple and Samsung as the main rivals in the race, smartphone manufacturers have initiated a new trend of releasing powerful, thin phones. As we were discussing the Samsung Galaxy S25 Edge and Apple's iPhone 17 Air,

TECNO has a tri-fold concept smartphone on display at MWC 2025. The company has it at its booth, over at Booth 6B11, Hall 6, Fira Gran Via. You can also see various other products