Samsung Starts 4GB One UI 9 Rollout to US Galaxy S26 After Delay

Q: What hidden bug forced Samsung to secretly delay the massive One UI 9 update for Galaxy S26 users?

Samsung has not publicly revealed any specific “hidden bug” that forced the One UI 9 delay for the Galaxy S26. What is known is that the Android 17-based update missed Samsung’s earlier rollout window, Samsung briefly acknowledged delays in some regions, and rollout materials were revised more than once. Around the same time, Samsung was still issuing late One UI 9 beta builds and even a Korea-only hotfix for the Galaxy S26 Ultra. Reports from beta users pointed to lag, sluggishness, and general stability problems, which strongly suggests Samsung found a last-minute software issue serious enough to pause the wider release. But there is no confirmed evidence from Samsung that the delay was caused by one particular bug, and no reliable public report has identified a single culprit such as battery drain, overheating, app crashes, or modem failure. The most defensible reading of the available evidence is that Samsung quietly held back the stable release to fix unresolved stability issues discovered late in testing. The rollout has now begun gradually in the US, starting with some T-Mobile Galaxy S26 units, especially the Ultra, with a roughly 4GB package that includes the September 2026 security patch. That suggests Samsung believes the blocking issue has been addressed, even if it has not explained exactly what it was.

Q: What secret hardware limitation is forcing Samsung to lock the Galaxy S26 FE out of its powerful new Gemini Intelligence?

The Galaxy S26 FE is being left out of Samsung’s Gemini Intelligence because it has only 8GB of RAM, while Samsung says the feature requires at least 12GB. That appears to be the key hardware limit behind the lockout. In materials tied to the One UI 9 rollout, Samsung indicates Gemini Intelligence is supported on the Galaxy S26, S26+, and S26 Ultra, all of which meet that 12GB memory threshold. The S26 FE, despite receiving Android 17 and One UI 9, does not. The FE is positioned as a cheaper model and uses an Exynos 2500 chip with 8GB of RAM and 128GB or 256GB of storage in the US. Samsung is still bringing many AI tools to the device, including Photo Assist, Document Scanner upgrades, Audio Eraser improvements, and expanded Now Brief and Now Nudge features. What it misses is the more demanding Gemini Intelligence layer. Samsung has not described this as a “secret” limitation, but the restriction points to memory capacity rather than software timing or carrier rollout issues. In short, the S26 FE can run One UI 9, but not Samsung’s full Gemini Intelligence package, because it does not have enough RAM.

3 articles · Updated · 9to5Google · Sep 24

US Galaxy S26 owners are beginning to receive Samsung’s Android 17-based One UI 9 update after the company’s earlier rollout missed its announced start.
Reddit reports show the roughly 4GB update has reached some T-Mobile devices, suggesting the release is finally moving beyond Samsung’s delayed launch window.
Unlocked Galaxy S26 models do not appear to have the update yet, indicating the rollout is still limited rather than broadly available across the US.
Samsung has not explained what caused the delay, but carrier availability typically signals a wider expansion to more devices and regions soon.