Samsung has released the fourth beta build of One UI 8.5, its upcoming Android skin set to debut with the Galaxy S26 series on February 25. The update, available now for select devices in South Korea, addresses critical bugs like automatic speakerphone activation during calls, Bluetooth audio sync issues, and AI Select menu glitches. This 1.5GB firmware update (version ZZAL) follows delays from its originally rumored mid-January launch, giving Samsung extra time to refine the skin ahead of the S26 rollout.

The beta focuses on improving call stability and multitasking, particularly when using Bluetooth accessories. Testers can check for updates via Settings > Software update. This aligns with broader rumors about the S26 series, which are expected to feature camera upgrades and redesigned wireless charging coils—though Samsung has faced criticism for using weaker magnets again.

The Galaxy S25 lineup, including the S25, S25+, and S25 Ultra, remains available for pre-order with configurations ranging from 128GB/12GB RAM to 512GB/12GB RAM. Meanwhile, Samsung quietly discontinued the Galaxy S21 series, signaling a shift toward newer models. Industry analysts suggest the One UI 8.5 beta’s delayed rollout reflects Samsung’s emphasis on polish before its major February launch.

Tech enthusiasts speculate that these updates could set benchmarks for Android UI optimization in 2026. With the S26 series poised to compete against Apple’s iPhone 17 rumors, Samsung’s focus on software refinement may differentiate its flagship offerings in a crowded market.