Tecno Spark Slim to Debut at MWC 2025 World’s Thinnest Phone with a Massive 5,200mAh Battery
Chinese brand Tecno defies physics with a 5.75mm-thin device packed with flagship specs, sustainability, and futuristic design.

Tecno is set to stun the tech world at Mobile World Congress (MWC) 2025 with its Spark Slim—a phone that merges jaw-dropping slimness (just 5.75mm) with a colossal 5,200mAh battery. Announced on February 28, 2025, this concept device challenges engineering norms, proving that “thin” doesn’t have to mean “compromised.”



Key Features of the Tecno Spark Slim


1️⃣ Design & Durability:

  • World’s thinnest phone at 5.75mm, crafted from recycled aluminum and stainless steel unibody.

  • Interactive light band for dynamic notifications and aesthetic flair.


2️⃣ Display:

  • 6.78-inch 3D Curved AMOLED screen with 144Hz refresh rate for silky-smooth scrolling.

  • 4,500 nits peak brightness—ideal for outdoor visibility.


3️⃣ Camera Setup:

  • Dual rear cameras: 50MP main sensor + 50MP ultra-wide lens.

  • 13MP front camera with AI-powered portrait modes.


4️⃣ Performance & Battery:

  • Octa-core chipset (specifics undisclosed) for multitasking and gaming.


  • 5,200mAh battery paired with 45W fast charging—30% charge in 10 minutes.


Why It’s a Game-Changer


  • Slim vs. Battery Paradox Solved: Tecno’s engineering feat addresses the age-old trade-off between sleek designs and battery capacity.


  • Sustainability Focus: Eco-friendly materials align with global green tech trends.


  • Premium at Mid-Range? While pricing remains under wraps, Tecno hints at aggressive positioning to rival Samsung and Xiaomi.



Launch Details:

  • Date: MWC 2025 (February 28–March 3, 2025).


  • Availability: Likely global release post-MWC, starting with Asia and Africa.


  • Expected Price: Competitive mid-range (rumored 499599).



FAQs

Q1: How does the Spark Slim manage such a large battery in a 5.75mm frame?

A: Tecno uses advanced stacked battery tech and ultra-thin cooling systems.


Q2: Will it support 5G?
A: Yes, confirmed via MWC teasers.


Q3: Is the camera suitable for low-light photography?
A: The 50MP sensors feature larger pixels and AI night mode.


Q4: What makes the design eco-friendly?
A: Recycled aluminum accounts for 60% of the chassis.


Q5: Which OS will it run?
A: Android 16 with Tecno’s HiOS 10 skin.




The Tecno Spark Slim isn’t just a phone—it’s a statement. By blending radical thinness, sustainability, and flagship-tier specs, Tecno aims to disrupt the mid-range market. If priced right, this could be the sleeper hit of 2025.



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