One device for everything? Foldable smartphones in everyday work life.

Industry 4.0: from technological trend to practical application. With large displays, foldable smartphones open up new possibilities for planning, documentation, and communication. But what should businesses consider when buying one?

This article is part of the special feature on digital craftsmanship.

With foldable smartphones, tradespeople benefit from two device classes in one: When closed, they function as a classic smartphone with a front-facing display ; when unfolded, they unfold to reveal an almost tablet-sized touch work surface of over 8 inches.

For trades businesses, this means a significant expansion of mobile working possibilities : building plans can be displayed larger, measurements can be checked more easily, and photos can be edited more conveniently. Applications such as digital construction diaries, project management tools, and documentation software particularly benefit from the larger screen, as multiple apps can be displayed simultaneously. Multitasking allows users, for example, to write emails while plans or photos remain visible.

Added value in everyday work

This combination of mobility and screen size offers significant added value in everyday work: Complex documentation can be carried out directly on-site without additional devices such as tablets or PCs. Photos of damage or construction progress can be easily edited and forwarded . Customer communication also benefits: Plans or visualizations can be presented directly to customers in a large format.

Another advantage is the integration of artificial intelligence : foldable smartphones analyze images, recognize objects, and assist with text creation. Voice recordings can also be automatically transcribed and notes structured. For craft businesses, this means less manual rework and more efficient documentation.

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Technology that unfolds

The biggest advantage of foldable phones is also their most vulnerable point: the flexible display , which folds along a hinge. This hinge determines the device's stability and longevity. While current models like the Samsung Galaxy Z Fold 7 or the Google Pixel 10 Pro Fold utilize improved mechanics and more durable materials, the design remains susceptible to damage . There's always the risk of dust penetrating the hinge and causing long-term damage – as protection against fine construction dust (IP6X) is still rare in foldable phones . Water resistance, on the other hand, is often present: many devices achieve protection ratings like IPX8 or IPX9, allowing for temporary submersion.

However, even with the Pixel 10 Pro Fold, one of the best-protected foldable devices with an IP68 rating, manufacturer Google offers no permanent guarantee: Water and dust resistance is "not a permanent condition" and can diminish or be lost entirely over time due to normal wear and tear, disassembly, or damage. This demonstrates that, despite all the advancements, foldable smartphones are (still) not suitable for permanently harsh environments . Furthermore, the flexible inner displays are inherently softer than conventional glass because they must be able to bend. Therefore, careful handling of sharp tools near the screen is essential.

Data security and GDPR

Photo: © DHB

The situation is significantly better when it comes to protecting sensitive data: Models officially available for the German market are based on the Android operating system, which offers comprehensive security features. These include encrypted data storage, biometric authentication, and regular security updates.

However, challenges can arise with devices from Chinese manufacturers such as Oppo , Honor , or Xiaomi . Companies should ensure that data processing and cloud services comply with European data protection requirements . Crucially, this involves relying on local data storage and GDPR-compliant security solutions. Furthermore, Mobile Device Management (MDM) systems can help implement security policies and control the devices.

Conclusion

The decision to purchase a foldable smartphone depends heavily on its intended use. Foldable devices are not yet suitable as rugged companions for harsh construction site conditions due to their lower protection ratings . However, those who regularly present plans and presentations, edit photos and documents, or use multiple applications simultaneously in dust-free environments will particularly benefit. In such cases, businesses should carefully consider whether the potential added value justifies the higher purchase price.

Checklist – The optimal foldable smartphone for operationPurpose & Benefits
– What tasks should the device perform (e.g., documentation, planning, communication, measurement)?
Does the foldable device replace or complement existing devices?
– How often is work done in the unfolded mode?

Display & Usability
– Is the display size sufficient for blueprints or sketches when unfolded?
– Is the brightness sufficient for working outdoors?
– Is the crease (fold) bothersome or acceptable in everyday use?

Robustness & suitability for construction sites
– Is there an official IP certification for protection against dust or water?
How sensitive is the flexible display to dirt or pressure?
Is a suitable protective case available?

Camera & Documentation
– Is the camera suitable for damage documentation and construction site photos?
– Is the quality sufficient even in poor lighting conditions?

Software & Compatibility
Do industry-standard apps run stably and optimized on the large display?
– How many years will software and security updates be available?

Battery life & energy
– Is the battery life sufficient for a full workday?
How quickly does the device charge in an emergency?
Are there any wireless charging options?
How much does intensive multitasking affect the battery?

Mobility & Ergonomics
– Is the device compact enough when folded?
Does it fit easily into work clothes or tool bags?
– How heavy is the device compared to traditional smartphones?
– Is one-handed operation possible in everyday use?
– Can emails, plans and photos be displayed simultaneously (multitasking)?

Costs & Profitability
– Is the purchase price proportionate to the practical added value?
– Can the device eliminate the need for other hardware purchases?
– How high are the repair and insurance costs?
– Is there long-term manufacturer support?
Is it worth buying now? Or is it better to wait for the next generation of devices (better technology, longer battery life, lower costs)?

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