TECNO has confirmed the launch of its latest device, the TECNO SPARK Slim, introducing new AI-powered capabilities to the smartphone market. The device makes a bold debut as the world’s slimmest curved-screen smartphone, measuring an astonishing 5.93mm. This landmark achievement directly challenges the long-held industry belief that ultra-slim designs must compromise on battery life, performance, and durability.
The SPARK Slim, carrying the youthful and stylish DNA of TECNO’s popular SPARK series, delivers a beyond-class experience by fusing a massive 5160mAh battery and a military-grade certified chassis into its record-breaking thin frame. This launch marks a new era of smartphone engineering, proving that sleek aesthetics and powerful, everyday substance can coexist.
The Engineering Paradox: Slimness Without Sacrifice
For years, consumers have been forced to choose between a slim, comfortable-to-hold phone and one with a battery that can last the day. The TECNO SPARK Slim has been meticulously engineered to eliminate this trade-off.
The 5.93mm profile, which is thinner than most pencils, was achieved through TECNO’s breakthrough “honeycomb space stacking technology.” This innovative structural approach optimizes 12% of the device’s internal space, allowing engineers to slim down eight core components including the motherboard, cooling system, and battery without sacrificing their integrity.
“Today, we are not just launching a new phone; we are launching a new concept,” said a TECNO spokesperson at the virtual launch event. “The SPARK Slim is a testament to our relentless pursuit of innovation. We asked our R&D teams to defy the impossible: create a phone that is impossibly thin but uncompromisingly strong. They have delivered.”
Despite its ultra-thin frame, the SPARK Slim houses a massive 5160mAh high-density lithium cobalt oxide battery. This advanced battery technology not only provides up to 24.8 hours of continuous Day of Use (DOU) but is also more stable and resistant to swelling after prolonged use, a common issue in slim devices. To complement this endurance, the phone supports 45W fast charging, 10W reverse charging, and bypass charging for gaming, ensuring power is always accessible.
Durability at its Core: Military-Grade Toughness
A key concern with ultra-slim phones is fragility. TECNO has addressed this head-on by constructing the SPARK Slim from advanced, lightweight materials that enhance its strength.
The back cover is made from 0.36mm aerospace-grade fiberglass, which is 0.19mm thinner than conventional materials but improves structural strength by 300% and flexibility by 200%. The front is protected by the latest Corning, Gorilla Glass 7i, offering robust protection against scratches and drops.
Furthermore, the entire device is IP64-rated for dust and water resistance and has passed rigorous military-grade certification (MIL-STD-810H), ensuring it can withstand the bumps, drops, and environmental stresses of daily life. At just 156 grams, it offers a superb, comfortable grip that feels both light and reassuringly solid in the hand.
Performance and Display: A Visual and Processing Powerhouse
The SPARK Slim is not just a design marvel; it is a multimedia powerhouse. The device is built around a stunning 6.78-inch 3D-curved AMOLED display. It boasts a 1.5K high-resolution (1224 x 2720 pixels) panel that delivers immersive clarity and vibrant colors.
With a 144Hz adaptive refresh rate, on-screen motion is exceptionally smooth, while a staggering 4500 nits of peak brightness ensures the display remains vivid and legible even in the brightest direct sunlight. The entertainment experience is further elevated by Dolby-tuned dual stereo speakers, creating an immersive soundscape for movies and gaming.
Under the hood, the SPARK Slim is powered by the new MediaTek Helio G200 chipset. Built on an efficient 6nm process, this octa-core processor is paired with 8GB of RAM and 256GB of internal storage, delivering smooth and responsive performance for everyday multitasking and moderate gaming.
To maintain stability during heavy use, TECNO has integrated an advanced cooling system. A 0.3mm ultra-thin vapor chamber and a high-conductivity graphite layer with a thermal performance of 1800W/m·K combines to create a total heat dissipation area of 24,532mm². This ensures the device stays cool during 45W charging cycles and extended gaming sessions.
Designed for Gen Z: Style Meets AI-Powered Function
True to the SPARK series, the SPARK Slim is designed for self-expression. The phone launches in two timeless colorways, Slim White and Cool Black, but its most unique design feature is the interactive “Mood Light.”
On the back, two circular “eyes” around the camera module mimic emotions through multi-scene lighting effects. These lights create playful animations for incoming calls, charging, notifications, and activating the “Ella” AI assistant, transforming functional alerts into a unique form of fashionable expression.
The camera system is headlined by a 50MP main sensor that captures detailed, high-resolution photos, paired with a 13MP front-facing camera for sharp selfies.
The SPARK Slim also integrates the latest TECNO AI software, running on Android 15 with HIOS 15. This includes practical AI tools like real-time translation, document summarization, and AI-powered photo repair. The device also features “Touch Transfer” for instant NFC-based file sharing between TECNO devices and “FreeLink” technology, which enables Bluetooth-based messaging and calls even without a cellular network, a critical feature for users in remote areas.
Availability and Market Impact
The TECNO SPARK Slim is set to be priced competitively.
After first being shown as a 5.75mm concept at MWC 2025, the launch of the 5.93mm commercial model demonstrates TECNO’s ability to turn ambitious engineering concepts into a mass-market reality.
With the SPARK Slim, TECNO has not just broken a record; it has thrown down the gauntlet to the entire industry. It proves that users no longer have to compromise, delivering a device that is as stylish to look at as it is powerful and reliable to use.
