Next-generation UFS storage may be featured in Samsung’s Galaxy S25 Ultra. As per X, the 2025 Ultra flagship will feature UFS 4.1 with 8GB/s data transfer rates. With UFS 4.0, the Galaxy S24 Ultra and many other devices can transfer up to 4GB per second. A new version of UFS 5.0 with even faster speed is expected to be released in 2027, hopefully in time for the Galaxy S27 Ultra.

The first Galaxy phone to feature UFS 4.0 storage chips came out in early 2023, though Samsung started making the chips in 2022. Compared to UFS 3.1, the Galaxy S23 series offers significantly faster data transfer rates. UFS 4.0 storage was available on all subsequent flagships, including foldables.

There will be no upgrades in this area in the Galaxy Z Fold6 and Galaxy Z Flip6, which are due next month. Samsung may introduce UFS 4.1 to Galaxy devices next year, at least the Galaxy S25 Ultra. It is possible that the other two models may still feature UFS 4.0. It is also possible that UFS 3.1 will be available for the base Galaxy S25.

UFS 4.1 is the same as UFS 4.0 with four lanes of CS, as was revealed earlier this year. For faster sequential read speed, it combines two UFS controllers. According to theory, the speed should double to 8GB per second. With the improved storage chip, the Galaxy S25 Ultra could deliver smooth on-device performance. Several rumors suggest that the phone will be upgraded to 16GB of RAM.

As of now, it is unclear whether Samsung will completely exclude the Galaxy S25 and Galaxy S25+ from UFS 4.1, or if only the base variants will be excluded.