Ultra-Slim Innovation, Foldable Phone Evolution: The Galaxy Z Fold 7 and the Market Race to 2025

Galaxy Z Fold7 & Z Flip7 (Source: Samsung Electronics)
Samsung Electronics unveiled the Galaxy Z Fold 7 on July 9, announcing its global launch in late July. The new Z Fold 7 reduces weight to 215 grams and measures just 8.9 mm when folded and 4.2 mm when unfolded, making it the thinnest and lightest Z Fold series yet. Compared to its predecessor, the Fold 6, the Galaxy Z Fold 7 offers noticeable improvements in thickness and weight. When folded, it’s 8.9mm thick, down from 12.1mm, which is about 3.2mm thinner, a reduction of about 26%. When unfolded, the thickness has also been reduced from 5.8 mm to 4.2 mm, which is about 28% thinner. The weight is also 24 grams lighter, from 239 grams to 215 grams. The main display has grown from 7.6 inches to 8.0 inches, and the cover display has widened from 6.3 inches to 6.5 inches. This is designed to improve both portability and visual immersion. The new “Armor Flex Hinge” uses enhanced materials and structural innovations to achieve a durable and thin design.
The 2025 foldable cell phone market is facing an intensifying race to slim down, and in addition to Samsung, other major manufacturers such as Vivo, Oppo, and Honor are launching a series of products in the 9mm or smaller class. The thinnest major foldable smartphone currently on the market is Honor Magic V5 White, which measures 8.8mm when folded and 4.1mm when unfolded. The lightest is the Galaxy Z Fold 7, which weighs just 215g, making it extremely portable. In terms of battery capacity, the Vivo X-Fold 5 has the largest at 6,000 mAh, which gives it an advantage for extended use. In terms of camera resolution, the Galaxy Z Fold 7 has a 200MP main camera, which offers top-notch shooting performance. Meanwhile, the OPPO Find N5 has the largest main display size at 8.12 inches, which is favorable for content viewing and multitasking.
Apple is currently working on its first foldable iPhone, which is expected to be released as early as the second half of 2026. Apple is preparing a book-type form factor with a 7.8-inch internal display and a 5.5-inch external display supplied by Samsung Display, and it is expected to be the thinnest device ever made by Apple, with a thickness of approximately 4.5 millimeters when unfolded and 9 to 9.5 millimeters when folded. The foldable iPhone will be powered by the next-generation A20 or A21 Pro chipset and will feature an iOS custom UI optimized for foldable experience. Foxconn plans to begin mass production of foldable iPhone around September or October 2025, and the product is expected to cost about twice as much as the iPhone 16 Pro Max. Meanwhile, Apple’s entry into the foldable market is expected to have a major impact on the entire foldable phone market, and competition among global manufacturers is expected to be in full swing between 2025 and 2027. In particular, the points of competition in the foldable market are becoming increasingly clear.
Ultra-slim design is not just a design innovation but also requires lightweight and slimmer technologies for core components and materials such as ultra-thin glass (UTG), hinge structures, battery packs, and highly integrated FPCBs. Therefore, the future foldable competition is expected to be characterized not only by device perfection, but also by securing technology at the component and material level as a key differentiator. Battery performance is also an important competitive factor, with the Vivo X-Fold 5 featuring a large 6,000mAh battery for long-lasting use, while the OPPO Find N5 supports 80W wired charging and 50W wireless fast charging. In terms of camera performance, Samsung’s Fold 7 has the highest image quality among foldable phones, with a 200-megapixel (200MP) main camera. In terms of software and AI optimization, Samsung is actively applying Google Gemini-based Galaxy AI, while Apple is preparing a multi-screen iOS for foldable displays. Finally, durability and waterproofing and high prices remain the biggest weaknesses of foldable phones and will likely be the key to product differentiation in the future.
In the end, the market for foldable phones will evolve toward “thinner, lighter, and smarter,” with design sophistication, software integration, battery life, and AI utilization emerging as key competitive factors. Apple’s entry is likely to accelerate all these competitive points.
Changho Noh, Analyst at UBI Research (chnoh@ubiresearch.com)

































