The evolution of the Samsung Galaxy Z Fold series: slimmer, stronger and lighter

As the name suggests, a foldable screen phone is a phone whose body can be folded. Different from traditional straight-board smartphones, foldable screen mobile phones are composed of folding bodies connected on the left and right sides through hinges, and the hinges are the key parts to realize the expansion, folding and closing of the mobile phone. Over time, Samsung has The hinge design of the Galaxy Z Fold series of folding screen phones introduces unique cutting-edge technology, creating stunning hinge designs with every release. In addition, Samsung is continuing to bring Galaxy Z The Fold series is designed to be thinner and lighter, allowing users to carry it around with ease.

Looking back at the development history of the Samsung Galaxy Z Fold series, we can see that its stylish appearance and unique hinge design are constantly evolving. The breakthroughs of each generation make the Samsung Galaxy Z The Fold series has become thinner, stronger, and lighter.

2019: Samsung Galaxy Fold

The folding screen mobile phone was born: opening up an innovative experience of folding and unfolding

Thickness in folded state: 15.7-17.1 mm Thickness in unfolded state: 6.9-7.6 mm Body weight: 276 grams

As lifestyles become more diverse, users’ needs are also constantly changing. Samsung launches advanced technologies every year to better meet these needs. Samsung Galaxy Fold in 2019 It debuted in 2018. With its "unconventional" folding body form, it achieved the further expansion of large screen and compact and portable experience for the first time. Thanks to Samsung's application of this unprecedented hinge technology, "folding and unfolding" has become a new mobile interaction method. At the same time, Samsung also strives to make this function more natural and intuitive for users.

The inward folding hinge design not only makes it easier for users to get started, but is also convenient to use, and it also provides strong protection for the inner screen. When the user uses it, the phone can be opened like a book, and the body can be slim enough when folded. At the same time, the hand-friendly size also provides comfortable portability. With the first Galaxy Fold, Samsung has controlled the maximum body thickness in the folded state to 17.1 mm, ushering in the era of folding screen mobile phones.

2020: Samsung Galaxy Z Fold2

The era of vertical interactive mode has arrived: invisible hinge and dust-proof fiber technology

Thickness in folded state: 13.8-16.8mm Thickness in unfolded state: 6.0-6.9mm Body weight: 282 gram

In 2020, the next generation of foldable screen mobile phone pioneer Samsung Galaxy Fold comes out. Samsung Galaxy Z Fold2 Adopting a new design aesthetic, the specifications of folding screen mobile phones are raised to a new level. Among its many innovations, the biggest highlight is the invisible hinge technology, which allows the fuselage to be more tightly connected and more stable when the fuselage is folded or unfolded. Users can use invisible hinge to make Samsung Galaxy Z Fold2 rotates and stops at any angle, and uses the vertical interactive mode to easily take selfies or make video calls.

Invisible hinge included More than 60 components bring an innovative double cam structure design. The cam structure design allows the device to remain open or closed and enables flexible mode. By enhancing the cam structure and the number of springs, the hinge can stably support a larger deployment angle. The part of the fuselage where the invisible hinge is located has been carefully considered to ensure that the maximum thickness of the folded fuselage is only Slim design at 16.8mm.

Since the hinge keeps folding when the device is opened or closed, there is inevitably a gap between the front of the phone and the hinged case. To effectively close this gap, Samsung needed to design a component that was both durable and resilient without adding extra bulk. Dust-proof fiber technology was born after designers were inspired by the brush heads of vacuum cleaners. Samsung solved this problem with finely cut fibers. Dust-proof fiber technology can protect the mobile phone display, prevent external dust and debris from entering the body through gaps, and provide a smoother folding and opening experience.

2021: Samsung Galaxy Z Fold3

Solve the biggest challenge of folding screen phones: waterproof

Thickness in folded state: 14.4-16.0 mm Thickness in unfolded state: 6.4 mm Body weight: 271 grams

Today All smartphones are waterproof. However, the hinge used to open and close a foldable phone is always exposed to the external environment. If liquids such as drinks or rainwater seep into the body, the phone will immediately face the risk of malfunction.

Samsung Galaxy Z Fold3 has solved one of the biggest challenges that folding screen mobile phones have always faced - waterproofing, becoming the first folding screen mobile phone with waterproof function. Samsung's waterproof technology is applied to both the outside of the screen and the hinge. The outside of the screen is wrapped with a rubber ring to prevent dust and liquids from entering, while key parts of the hinge are made of corrosion-resistant materials and coated with long-lasting lubricants. The two motherboards connected to the hinge use CIPG sealing technology to prevent deep penetration of liquids. In addition, Samsung also uses FPCB cables to provide protection for sensitive components.

For the first time, Samsung Galaxy Z Fold3 uses armored aluminum, a strong material, which can resist external impacts and reduce the risk of deformation or scratches, while also achieving a lightweight body.

Armored aluminum is suitable for the fuselage frame and hinge cover. So, to protect your Samsung Galaxy Z Fold3 The densely packed various components in the invisible hinge ensure smooth opening and closing and vertical interaction modes, and the hinge cover must be made of strong materials.

Dust-proof fiber technology has also been upgraded. As the body becomes slimmer while improving aesthetics, the bristles of the anti-dust fiber are further shortened and continue to protect the hinge from dust and external particles. These innovations enable Samsung Galaxy Z Fold3 is only 16.0 mm thick in the folded state.

2022: Samsung Galaxy Z Fold4

From cam brake structure to spiral structure: thinner and lighter hinge

Thickness in folded state: 14.2-15.8mm Thickness in unfolded state: 6.3mm Body weight: 263 gram

The Samsung Galaxy Z Fold4, unveiled in 2022, greatly reduced the weight and thickness of the fuselage, making it the thinnest folding screen phone in the series at the time. The body weighs 263 grams more than the Samsung Galaxy Z Fold2 is nearly 20 grams lighter at 282 grams; the maximum thickness in the folded state is only 15.8 mm. It can be said that Samsung has once again incorporated innovation into its iconic folding screen phone, creating a body that is easier to hold and thinner.

Samsung Galaxy Z Fold4 uses a redesigned new generation hinge, which is not only 21% lighter than the previous generation product, but can also support wider and shorter external screens. The new generation hinge changes the previous cam rotating structure to a linear spiral structure, which greatly reduces the weight, thickness and number of parts. It not only simplifies the complexity of production and manufacturing, but also improves the flexibility of the product. With Samsung Galaxy With the release of Z Fold4, Samsung not only brought a breakthrough in bringing the thinnest and lightest hinge at the time, but also maintained the same excellent appearance and durability as its predecessor.

2023: Galaxy Z Fold5

Ultra-closing precision hinge: the key innovation for folding screen phones

Thickness in folded state: 13.4mm Thickness in unfolded state: 6.1mm Body weight: 253g

2023 , Samsung Galaxy Z Fold5 Announce to the world the arrival of a new generation of foldable screen phones. Samsung abandoned the traditional invisible hinge and instead adopted a new "ultra-closed precision hinge", demonstrating another innovation in its folding screen technology. The ultra-closed Seiko hinge has higher flexibility and more comprehensive functions. By using a double-track integrated structure, the inner screen can be curled into the hinge like a water droplet, and the components can slide along the rotating axis. Thanks to this hinge technology, the screens on both sides can be folded flatly without leaving creases and gaps.

This new hinge structure creates the thinnest and lightest Galaxy Z Fold series product to date. Samsung Galaxy Z The body thickness of Fold5 is more than 2 mm less than that of the previous generation, making the maximum thickness in the folded state only 13.4 mm, and weighs 253 grams, which is 10 grams lighter than the previous generation product. It is more compact, portable and stable after folding. In addition, the stylish design of this phone is stunning no matter from which angle you look at it.

Every year, Samsung creates a better Galaxy Z through exquisite and delicate craftsmanship Fold series. From the internal structure to the exterior design, every detail is carefully considered. Through the redesign of the hinge and the continuous pursuit of body thickness, Galaxy Z Fold has considered a series of core elements of the folding screen. The usefulness of the series has been greatly improved. In the future, Samsung will make further breakthroughs in the field of foldable screen mobile phones, allowing more users to enjoy a convenient life.

Samsung will hold Galaxy Unpacked in Paris on July 10th, so stay tuned for Samsung’s latest innovations.

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