Top Ultra-Slim Smartphones of 2025. In 2025, slim smartphones are no longer just about looks. They now deliver high-end performance, premium features, and strong battery life—all in remarkably thin, lightweight bodies. Leading brands like Apple, Samsung, Oppo, and Tecno are redefining what ultra-thin phones can offer. Let’s take a closer look at the most impressive slim smartphones launched this year.
Apple iPhone Air
Apple’s iPhone Air is the thinnest iPhone ever, measuring just 5.64mm. It features a 6.5-inch Super Retina XDR OLED display with 120Hz ProMotion and peak brightness of 3000 nits. The phone runs on the A19 Pro chip built on a 3nm process, delivering top-tier performance and energy efficiency.
Connectivity is also future-ready. The iPhone Air includes Apple’s new N1 chip for Wi-Fi 7 and Bluetooth 6. It also supports faster mobile data with the C1X modem, using 30% less power than before.
Apple has reworked the design with a new plateau-style camera bump. The rear camera system features a 48MP main sensor and a 12MP 2x telephoto lens. On the front, there’s an 18MP Center Stage camera with 4K HDR video and Dual Capture.
The phone runs iOS 26, supports eSIM-only connectivity worldwide, and includes an Action Button for custom shortcuts. With up to 27 hours of video playback, the iPhone Air proves you don’t need thickness for power.
Samsung Galaxy S25 Edge
Samsung’s Galaxy S25 Edge is the slimmest S-series device to date, measuring only 5.8mm and weighing 163 grams. It includes a 6.7-inch QHD+ LTPO AMOLED display with adaptive refresh from 1Hz to 120Hz and Gorilla Glass Ceramic 2 for protection.
Powered by the Snapdragon 8 Elite for Galaxy chip, it delivers strong performance while staying cool, thanks to a redesigned vapor chamber. The 200MP main camera now performs 40% better in low light. A 12MP ultra-wide sensor adds macro capabilities, while the 12MP front camera supports 4K video.
Running Android 15 with One UI 7, the phone brings several Galaxy AI features. These include Call Transcript, Circle to Search, and Writing Assist. Samsung also promises seven years of OS and security updates, giving the S25 Edge impressive long-term value.
Tecno Pova Slim 5G
Tecno’s Pova Slim 5G is its thinnest curved smartphone yet, measuring 5.95mm and weighing just 156 grams. The 6.78-inch curved AMOLED display supports 1.5K resolution, a 144Hz refresh rate, and reaches up to 4500 nits in peak brightness.
Inside, it runs on the MediaTek Dimensity 6400 chip with 8GB RAM and 128GB of storage. The phone ships with Android 15 and Tecno’s HiOS 15. It also includes the Ella AI assistant, which supports regional languages.
For cameras, the device offers a 50MP main sensor and a 13MP front-facing camera. A standout feature is the Dynamic Mood Light on the back, which reacts to calls and notifications. Despite being ultra-slim, the Pova Slim 5G packs a 5160mAh battery and supports 45W fast charging.
Oppo Find N5
The Oppo Find N5 is a flagship foldable focused on thin design. When unfolded, it is just 4.21mm thick. Folded, it measures 8.93mm. The internal screen is an 8.12-inch 2K LTPO AMOLED panel. The outer screen is 6.62 inches with FHD+ resolution. Both support 120Hz refresh and stylus input.
The hinge is a major highlight. Made with 3D-printed aerospace-grade titanium, it’s 26% thinner and 36% more rigid than the previous version. It is also certified for 100,000 folds.
Under the hood, the Find N5 features the Snapdragon 8 Elite chip with 16GB of RAM and 512GB of storage. The rear camera system includes a 50MP main camera, an 8MP ultra-wide, and a 50MP 3x periscope telephoto lens. Powering the phone is a 5600mAh silicon-carbon battery with 80W wired and 50W wireless charging.
Samsung Galaxy Z Fold 7
Samsung continues to refine foldables with the Galaxy Z Fold 7. It weighs 215 grams and is just 4.2mm thick when unfolded. The device includes an 8-inch QXGA+ AMOLED inner display and a 6.5-inch FHD+ outer screen. Both support 120Hz adaptive refresh and are protected by Gorilla Glass Ceramic 2.
The phone uses the Snapdragon 8 Elite for Galaxy chip, with options up to 16GB of RAM and 1TB of storage. The rear camera system features a 200MP main sensor, a 12MP ultra-wide, and a 10MP 3x telephoto lens. Each screen also has a 10MP selfie camera.
Running Android 16 with One UI 8, the Fold 7 offers Galaxy AI tools like Photo Assist, Audio Eraser, and Drawing Assist. Samsung also improved security with Knox Encrypted Protection and post-quantum cryptography support. A 4400mAh battery supports 25W wired, 15W wireless, and 4.5W reverse wireless charging.
