In 2025, smartphone manufacturers have embraced a remarkable shift toward ultra-thin designs, sparking what industry analysts are calling the "slim renaissance."
This trend represents a significant departure from recent years when flagship phones consistently grew thicker to accommodate larger batteries, more advanced camera systems, and additional sensors.
The new wave of slim smartphones demonstrates impressive engineering feats, managing to pack substantial power and features into increasingly slender frames.
From Samsung's newly launched Galaxy S25 Edge to innovative concepts from Chinese manufacturers like Tecno, the race for the thinnest smartphone is heating up like never before.
This article explores the top 10 thinnest phones of 2025, diving into their specifications, unique features, and what makes each of them stand out in this rapidly evolving category.
The Slim Revolution: Why Thin Is In Again?
After years of smartphones growing increasingly bulkier to accommodate more features, manufacturers have found innovative ways to slim down their devices without compromising performance. This shift is driven by several factors:
- Engineering advancements: New battery technologies, more efficient processors, and innovative cooling systems have made it possible to maintain performance in thinner frames.
- Material innovations: Stronger, lighter materials like titanium and ceramic compounds allow for sturdy yet slim designs.
- Consumer demand: As smartphones reached peak functionality, design differentiation has become more important for manufacturers looking to stand out.
- Competitive pressure: With Apple rumored to release the iPhone 17 Air later in 2025, Android manufacturers are racing to establish themselves in the ultra-thin category first.
Industry analyst Ben Wood from CCS Insight summarized this trend perfectly when he stated, "For the second half of 2025 'thin is most definitely in.' Samsung is first out the gate with a slim design, but Apple is expected to follow in September, and the burgeoning Chinese brands such as Honor and Xiaomi probably won't be far behind.
Top 10 Thinnest Phones 2025
In a world where smartphone design is constantly evolving, thinness has become a symbol of elegance and innovation.
While many brands focus on packing more features, cameras, and battery power into their devices, a few have managed to do so while maintaining an incredibly slim profile.
Whether you're a minimalist who loves sleek aesthetics or just want a phone that easily slips into your pocket or purse, this list is for you.
From cutting-edge foldables to ultra-slim concept devices, here are the Top 10 Thinnest Phones of 2025 — where beauty meets precision engineering.
| Rank | Phone Name | Thickness |
|---|---|---|
| 10 | Infinix Note 50 4G | 7.6mm |
| 9 | Vivo V40 | 7.6mm |
| 8 | Google Pixel 9 Pro Fold | Unspecified (thin foldable) |
| 7 | Vivo X5 Max | 4.75mm |
| 6 | Samsung Galaxy Z Fold6 (Unfolded) | 5.6mm |
| 5 | Honor Magic V2 (Unfolded) | 4.7mm |
| 4 | Honor Magic V Purse (Unfolded) | 4.3mm |
| 3 | Honor Magic V3 (Unfolded) | 4.65mm |
| 2 | Samsung Galaxy S25 Edge | 5.8mm |
| 1 | Tecno Spark Slim | 5.75mm |
10. Infinix Note 50 4G
- Thickness: 7.6mm
- Status: Available in select markets
Sharing the tenth spot with the Vivo V40, the Infinix Note 50 4G demonstrates that the trend toward thinner phones is happening across price segments. As a budget-oriented device, its slim profile is particularly notable, showing that thinness is no longer exclusively a premium feature.
Key Specifications
- Display: 6.78-inch AMOLED, 1080 x 2436 pixels resolution, 144Hz refresh rate, 1300 nits peak brightness, Always-On Display support.
- Processor: MediaTek Helio G100 Ultimate (6nm), Octa-core CPU (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55), Mali-G57 MC2 GPU.
- Memory: 8GB RAM, 256GB internal storage (UFS 2.2).
- Operating System: Android 15 with XOS 15; up to 2 major Android upgrades.
- Rear Camera: Dual setup – 50MP primary sensor with OIS and PDAF, 2MP macro lens; supports 1440p video recording at 30fps.
- Front Camera: 13MP sensor, 1080p video recording at 30fps.
- Battery: 5200 mAh capacity; supports 45W wired charging (100% in 60 minutes), 30W wireless MagCharge, 10W reverse wired charging, and reverse wireless charging.
- Build: Glass front, aerospace-grade aluminum frame; dimensions: 163.3 x 74.4 x 7.6 mm; weight: 199g; IP64 dust and water resistance; RGB notification light on the back.
- Audio: Stereo speakers tuned by JBL; no 3.5mm headphone jack; supports 24-bit/192kHz Hi-Res & Hi-Res wireless audio.
- Connectivity: Dual Nano-SIM, 4G LTE, Wi-Fi 802.11 a/b/g/n/ac (dual-band), Bluetooth 5.4, GPS, NFC (market/region dependent), Infrared port, USB Type-C 2.0 with OTG support.
- Sensors: Under-display optical fingerprint sensor, accelerometer, gyro, proximity sensor, compass.
- Colors: Titanium Grey, Ruby Red, Mountain Shade, Shadow Black.
9. Vivo V40
- Thickness: 7.6mm
- Status: Available globally
While not as eye-catchingly thin as the top entries on this list, the Vivo V40 represents the trend of mainstream phones getting slimmer across the board. At 7.6mm, it's notably thinner than most flagship phones from a few years ago, showing how engineering advancements are allowing even mid-range devices to slim down.
Key Specifications:
- Display: 6.78-inch AMOLED, 120Hz refresh rate
- Processor: Qualcomm Snapdragon 7 Gen 1
- RAM: 8GB / 12GB
- Storage: 128GB / 256GB
- Battery: 4500mAh with 44W fast charging
- Camera: 64MP rear, 32MP front
8. Google Pixel 9 Pro Fold
- Thickness: Not specified
- Status: Google's premium foldable offering
While not as thin as some of its competitors, the Google Pixel 9 Pro Fold makes the list as one of the thinnest foldable phones from a major non-Chinese manufacturer.
Google's approach emphasizes software optimization and camera capabilities rather than pursuing the absolute thinnest design possible.
The Pixel 9 Pro Fold demonstrates that there are different philosophies when approaching thin phones—some manufacturers prioritize breaking thickness records, while others focus on creating balanced devices that happen to be thinner than previous generations.
Key Specifications:
- Main Display: 8-inch OLED, 120Hz
- Cover Display: 6.3-inch OLED
- Processor: Google Tensor G4
- RAM: 16GB
- Storage: 256GB / 512GB
- Battery: 4650mAh with 45W fast charging
- Camera: 48MP main, 10.5MP ultra-wide, 10.8MP telephoto
7. Vivo X5 Max
- Thickness: 4.75mm
- Status: Still holds the record for thinnest non-foldable smartphone ever made
Though not a 2025 release, the Vivo X5 Max deserves mention as it still holds the absolute record for the thinnest non-foldable smartphone ever created.
Its engineering achievement remains impressive even by today's standards and serves as a benchmark for manufacturers pursuing ultra-thin designs.
The X5 Max demonstrates just how far manufacturers could push thinness when making it the primary design goal.
However, the compromises in battery life and overall durability that came with such an extreme design help explain why modern ultra-thin phones generally don't attempt to break this record, instead finding a better balance between thinness and practical usability.
Key Specifications
- Display: 5.5-inch Super AMOLED
- Processor: MediaTek MT6752
- RAM: 2GB
- Storage: 16GB, expandable via microSD
- Battery: 2000mAh
- Camera: 13MP rear, 5MP front
6. Samsung Galaxy Z Fold6
- Thickness: 5.6mm (unfolded)
- Status: Flagship foldable in Samsung's lineup
Samsung's flagship foldable barely misses the top 5 list, but remains one of the thinnest book-style foldables from a major manufacturer. The Galaxy Z Fold6 builds on Samsung's years of experience in the foldable market with refinements to both hardware and software.
Key Specifications:
- Main Display: 7.6-inch Dynamic AMOLED 2X, 120Hz
- Cover Display: 6.3-inch AMOLED
- Processor: Qualcomm Snapdragon 8 Gen 3 for Galaxy
- RAM: 12GB
- Storage: 256GB / 512GB / 1TB
- Battery: 4400mAh with 25W wired and wireless charging
- Camera: 50MP main, 12MP ultra-wide, 10MP telephoto
Samsung's commitment to durability and water resistance—features often sacrificed in the pursuit of thinness—makes the Z Fold6 particularly notable. It may not be the absolute thinnest foldable, but it offers a more complete package than many of its slimmer competitors.
5. Honor Magic V2
- Thickness: 4.7mm (unfolded), 9.9mm (folded)
- Status: Available globally since early 2024
Previously holding the title of the world's thinnest foldable phone before being surpassed by the V Purse, the Honor Magic V2 remains an impressive engineering achievement. First introduced in the Chinese market in July 2023, it achieved global availability in early 2024.
Key Specifications:
- Main Display: 7.92-inch Foldable LTPO OLED
- Cover Display: 6.43-inch OLED
- Processor: Qualcomm Snapdragon 8 Gen 2
- RAM: 16GB
- Storage: 256GB / 512GB / 1TB
- Battery: 5000mAh with 66W fast charging
- Camera: 50MP main, 50MP ultra-wide, 20MP telephoto
The Magic V2 demonstrates Honor's rapid innovation in the foldable space, showing significant improvements in thinness and overall design in just one generation.
4. Honor Magic V Purse
- Thickness: 4.3mm (unfolded), 8.6mm (folded)
- Status: Available in select markets
The Honor Magic V Purse introduces a unique approach to foldable design by folding outward rather than inward like most foldable phones. At just 4.3mm when unfolded, it's one of the thinnest devices on the market, foldable or otherwise.
Key Specifications:
- Main Display: 7.71-inch OLED
- Processor: Qualcomm Snapdragon 778G
- RAM: 8GB / 12GB
- Storage: 256GB / 512GB
- Battery: 4500mAh with 35W fast charging
- Camera: 50MP main, 12MP ultra-wide
What makes the V Purse stand out is its fashion-forward approach—Honor has designed it to be as much a fashion accessory as a technological device. The outward-folding design allows the screen to wrap around to the back of the phone, creating an extended display experience.
3. Honor Magic V3
- Thickness: 4.65mm (unfolded), 9.8mm (folded)
- Status: Available globally
The Honor Magic V3 currently holds the distinction of being one of the thinnest foldable phones on the market. At just 4.65mm when unfolded, it's thinner than many non-folding smartphones, which is a remarkable engineering achievement considering the complexities of foldable designs.
Key Specifications:
- Main Display: 7.92-inch Foldable LTPO OLED
- Cover Display: 6.43-inch OLED
- Processor: Qualcomm Snapdragon 8 Gen 3
- RAM: 16GB
- Storage: 256GB / 512GB / 1TB
- Battery: 5000mAh with 66W fast charging
- Camera: 50MP main, 50MP ultra-wide, 20MP telephoto
Honor has managed to create a foldable device that feels premium and durable despite its thinness. The ability to support stylus input on the large internal display makes it particularly attractive for productivity users who want a device that can function as both a phone and a tablet.
2. Samsung Galaxy S25 Edge
- Thickness: 5.8mm
- Status: Officially launched May 13, 2025; on sale May 30, 2025
The Samsung Galaxy S25 Edge marks the return of the "Edge" moniker and represents Samsung's entry into the ultra-thin flagship category. Officially unveiled on May 13, 2025, after being teased at the January Galaxy Unpacked event, this phone positions itself between the Galaxy S25 Plus and S25 Ultra in pricing while offering a distinctly different design philosophy.
Key Specifications:
- Display: 6.7-inch QHD+ AMOLED, 120Hz
- Processor: Qualcomm Snapdragon 8 Elite
- RAM: 12GB
- Storage: 256GB / 512GB
- Battery: 3900mAh with 25W wired and 15W wireless charging
- Camera: 200MP main, 12MP ultra-wide
The S25 Edge makes some compromises to achieve its slim profile, most notably in battery capacity and the absence of a dedicated telephoto lens. However, it leverages the same high-resolution 200MP main sensor found in the S25 Ultra, which Samsung claims can deliver "optical quality" 2x zoom through sensor cropping.
Samsung has positioned the S25 Edge as more than just a thin smartphone, emphasizing its premium materials and the full suite of Galaxy AI features. The titanium frame—similar to the S25 Ultra—helps maintain structural integrity despite the slimmer design.
The phone will be available in the US starting May 30, with pre-orders beginning May 12. Samsung is offering a limited-time promotion where customers can get the 512GB variant for the price of the 256GB model when purchasing directly from Samsung.
1. Tecno Spark Slim
- Thickness: 5.75mm
- Status: Concept phone showcased at MWC 2025, production version expected in second half of 2025
The Tecno Spark Slim captured attention at Mobile World Congress 2025 by claiming the title of the world's thinnest smartphone with a battery exceeding 5,000mAh. This engineering marvel demonstrates that ultra-thin designs don't have to sacrifice battery life.
Key Specifications:
- Display: 6.78-inch 3D curved AMOLED (1.5K resolution, 144Hz refresh rate, 4,500 nits peak brightness)
- Battery: 5,200mAh with 45W fast charging (battery thickness: 4.04mm)
- Camera System: Dual 50MP rear cameras, 13MP front camera
- Processor: Unspecified "high-end octa-core CPU"
- Design: Recycled aluminum and stainless steel unibody design
What makes the Tecno Spark Slim particularly impressive is how it challenges the traditional trade-offs associated with thin phones. Despite its slender profile, it manages to include a battery larger than what's found in the substantially thicker Galaxy S25 Ultra (5,000mAh).
Tecno has indicated that while initially presented as a concept, a commercial version of the Spark Slim is expected to launch globally in the second half of 2025. It represents a significant engineering achievement for Tecno, a company traditionally focused on developing markets that is now showcasing innovation on the global stage.
