Track the Samsung One UI update schedule as One UI 9 reaches Galaxy S24 and older flagships, alongside support timelines for Galaxy phones and smartwatches.
The Samsung One UI update schedule governs how frequently Galaxy smartphones, foldables, and connected wearables receive Android operating system upgrades and monthly security maintenance. Samsung historically stood among the strongest manufacturers for long-term Android maintenance, competing closely with Google on timeliness and overall support duration. Its current software generation runs One UI 9 on top of Android 17 across supported phones and watches.
Samsung provides two distinct support tiers for modern flagships. For years, the company guaranteed four generations of Android OS updates alongside five years of security patches for premier handsets. Starting with the Galaxy S24 series and the Galaxy Z Fold 6, Samsung expanded that commitment to seven full years of both OS and security updates. Earlier premium models remain capped at five total years. Most supported flagships receive security patches on a monthly cycle for the bulk of their lifespan, transitioning to quarterly distributions during their final year of active coverage.
Devices on the monthly security schedule include Samsung’s primary flagship lines, specifically the Galaxy S family and the Galaxy Z Fold and Flip foldables. Devices released prior to the Galaxy S24 and Z Fold 6 remain on five-year plans. Once any device enters its final year of manufacturer support, Samsung shifts it from monthly releases to quarterly patches. The quarterly schedule yields noticeably fewer downloads. Tablet lineups from Samsung bypass monthly cycles entirely, launching under quarterly maintenance schedules from day one.
Samsung’s Galaxy Watch line operates under a quarterly timetable beginning at launch. Software coverage on smartwatches varies depending on hardware generation. With the debut of the Galaxy Watch 9 and Galaxy Watch Ultra 2, Samsung extended wearable coverage to five years of combined operating system and security updates. Older smartwatches released prior to those versions receive four years of Wear OS upgrades paired with five years of security patches.
Because top-tier Galaxy phones receive monthly patches, manual verification ensures the handset carries the latest firmware. Checking for available software on a Galaxy S phone or Galaxy Z foldable takes several quick steps:
Owners can update a Galaxy Watch directly from the wearable hardware:
Alternatively, smartwatch updates can be triggered from a paired smartphone:
On October 20, 2026, the Galaxy S24 lineup became the latest flagship group to receive One UI 9 in the United States. US build designations for the release include S921USQU6EZIF for the Galaxy S24, S926USQU6EZIF for the S24+, and S928USQU6EZIF for the S24 Ultra. That release followed an update on October 13, 2026, when One UI 9 arrived for the Galaxy Z Fold 6 under build F956USQU4EZIH, the Galaxy Z Flip 6 under build F741USQU4EZIH, and the Galaxy S24 FE under build S721USQUEEZIF.
Late September saw rapid One UI 9 deployment across newer generations. On September 29, 2026, updates expanded globally to the Galaxy Z Fold 7 and Galaxy Z Flip 7, carrying firmware versions F966NKSUCCZIH and F766NKSUCCZIH. The Galaxy S25 family began its rollout on September 28, 2026, debuting in South Korea before extending internationally; United States builds encompass S938USQUCDZIF, S937USQU9DZIF, S936USQUCDZIF, and S931USQUCDZIF. Samsung initially launched stable One UI 9 on September 16, 2026, for the Galaxy S26, Galaxy S26+, and Galaxy S26 Ultra with US firmware versions S942USQU4BZID, S947USQU4BZID, and S948USQU4BZID.
Samsung routinely adjusts device status as hardware matures. On September 8, 2026, the company retired the Galaxy Z Fold 3 and Galaxy Z Flip 3 after completing five full years of updates. That same update shifted the Galaxy Z Fold 4 and Galaxy Z Flip 4 to quarterly status for their fifth and final support year. Samsung simultaneously removed the Galaxy Watch 4 and Galaxy Watch 4 Classic upon concluding their five-year term. Earlier in the year, on February 3, 2026, Samsung transitioned the Galaxy S22, S22+, and S22 Ultra to quarterly distributions while dropping the Galaxy S21, S21+, and S21 Ultra after reaching end of life. The Galaxy S20 series similarly reached end of life on April 8, 2025, when Samsung removed the Galaxy S20, S20+, and S20 Ultra from active maintenance.
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Cristian Penisoara is a Guides Writer and Android specialist at Droid Tools. An Android user since version 2 and a professional event photographer, he combines technical curiosity with a detail-oriented approach - every guide he publishes is tested step-by-step on a real device before it goes live.
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