Samsung's Secret Galaxy Z Fold Development: One UI 9 and Android 17 Revealed

Samsung is currently refining its foldable lineup with two distinct Galaxy Z Fold devices scheduled for release this year. Beyond the anticipated Galaxy Z Fold 8, the tech giant is reportedly crafting a "mysterious" second foldable that could significantly change the market dynamic. This secondary device, identified by its unique model number, suggests that Samsung is preparing to offer a more diverse range of foldable options to consumers worldwide.

The Emergence of One UI 9 and Android 17

It seems development on this new Fold is coming along swimmingly. This is evident from the fact that Samsung has now officially started the development of this second Fold’s software ecosystem. Much like the upcoming Galaxy Z Fold 8 and Z Flip 8, this mysterious device will run Android 17 and Samsung’s next-generation One UI 9 interface right out of the box.

The first firmware identified for the device carries the specific build number F971USQU0AZB1. Interestingly, One UI 9 firmware for the standard Z Fold 8 and Z Flip 8 was also spotted on the same day, indicating a synchronized development cycle for Samsung’s 2026 foldable family. This suggests that the "mysterious" model is not merely a prototype but a core part of the upcoming hardware release schedule.

Industry analysts believe that the model number F971 points toward a device that could be positioned as a "Fan Edition" or a slightly more budget-friendly version of the premium Fold series. By diversifying the lineup, Samsung aims to maintain its dominance in the foldable market against increasing competition from other manufacturers.

What is the significance of the F971 model number?

The model number F971 suggests a variant of the Galaxy Z Fold series that differs from the standard flagship. Historically, such variations often indicate a device with adjusted specifications to target a more accessible price point.

Will the new Galaxy Z Fold launch with the latest software?

Yes, internal testing confirms that the device is being built to run Android 17 and Samsung's custom One UI 9 skin, ensuring it features the latest AI capabilities and interface improvements.

Is this the same device as the Galaxy Z Fold 8?

No, while both are being developed simultaneously, the F971 build is distinct from the primary Galaxy Z Fold 8 firmware, suggesting two separate foldable models will be available.

What does the firmware build F971USQU0AZB1 tell us?

This build number indicates that Samsung has moved past the conceptual phase and is now actively compiling and testing the operating system for the hardware, signaling a release in the foreseeable future.

🔎 As Samsung continues to push the boundaries of foldable technology, the appearance of One UI 9 for a mysterious new Galaxy Z Fold highlights the company's commitment to innovation and market expansion. Whether this device turns out to be a more affordable "FE" model or a new experimental form factor, it is clear that the foldable landscape is about to become much more exciting. We will continue to monitor this developing story as more firmware details emerge.