These are the best thin smartphones of 2025, featuring ultra-slim designs from Apple, Samsung, Oppo, and Tecno with powerful specs and premium features.
In 2025, slim smartphones are no longer about sacrificing features for form. Brands are pushing the limits of engineering to deliver thin, lightweight devices without compromising on performance, battery life, or camera hardware.
Apple, Samsung, Oppo, and Tecno have all released phones this year that prioritize sleek profiles while maintaining premium experiences. Here’s a detailed look at the best thin smartphones launched so far in 2025.iPhone Air
Apple introduced the iPhone Air as its thinnest iPhone to date at just 5.64mm. The device features a 6.5-inch Super Retina XDR OLED display with ProMotion up to 120Hz and peak outdoor brightness of 3000 nits. It supports Always-On Display and uses Ceramic Shield 2 on both front and back for enhanced durability.
The iPhone Air is powered by the A19 Pro chip built on a 3nm process. It includes a 6-core CPU, a 5-core GPU with neural accelerators, and Apple’s new N1 wireless chip that supports Wi-Fi 7 and Bluetooth 6. The C1X modem enables faster cellular performance than the previous generation while using 30% less energy.
Apple uses a new precision-milled plateau design to house the rear 48MP Fusion camera and logic board. The camera system includes a 12MP 2x telephoto lens and new depth-sensing portrait features powered by an upgraded image pipeline. On the front, Apple added an 18MP Center Stage camera with a square sensor, ultra-stabilized 4K HDR video, and Dual Capture for recording from both front and rear cameras at once.
The iPhone Air supports eSIM-only connectivity worldwide and includes an Action Button with customizable shortcuts. It runs iOS 26 and promises up to 27 hours of video playback.Samsung Galaxy S25 Edge
Samsung unveiled the Galaxy S25 Edge as its thinnest S-series phone yet, measuring 5.
