Samsung Galaxy S23 Series Receives Second One UI 8.5 Beta Update: Major Bug Fixes and April 2026 Patch

Samsung is accelerating its development cycle for the highly anticipated software upgrade. Approximately three weeks after launching the initial One UI 8.5 Beta Program for the Galaxy S23 series, the tech giant has officially rolled out the second beta update. This latest iteration is specifically engineered to address several critical performance issues and stability bugs that early testers encountered in the first release.

The second One UI 8.5 beta update is currently being deployed to users in India and South Korea, covering the entire flagship family: the Samsung Galaxy S23, Galaxy S23+, and the Galaxy S23 Ultra. The update is identified by a firmware version ending in ZZDP and requires a substantial download of over 700MB. Beyond feature refinements, it importantly bundles the April 2026 security patch, ensuring the devices remain protected against the latest vulnerabilities.

Detailed Changelog: What’s Fixed in Beta 2?

The primary focus of this update is refinement. Samsung has listened to community feedback to squash bugs that hindered the daily usability of the Galaxy S23 Ultra and its siblings. Below is the official list of improvements included in this build:

• Call Reliability: Fixed the frustrating delay or total black screen that occasionally occurred when receiving an incoming call.
• Sensor Accuracy: Improved the proximity sensor's release behavior, which previously caused errors during active voice calls.
• Camera Performance: Resolved a specific visual bug where green lines would appear when recording 4K HDR videos using certain third-party camera applications.
• System Stability: Addressed frequent Bluetooth crashes that affected wireless accessory connections.
• Touch Interface: Fixed a multi-touch malfunction that was triggered after enabling certain accessibility settings.

As the beta phase progresses, Samsung is expected to release at least one or two more minor builds to polish the user interface before the final stable version. If the current pace continues, users can expect the stable One UI 8.5 update to arrive globally as early as next month.

Which regions can currently download the One UI 8.5 Beta 2?

The update is currently live for Galaxy S23 series users in India and South Korea. It is expected to expand to other beta-eligible regions, such as the USA, Germany, and the UK, shortly.

What is the download size of this new firmware?

The update is quite significant for a secondary beta, weighing in at approximately 700MB. It is recommended to download it over a stable Wi-Fi connection.

Does this update fix the green line issue in videos?

Yes, the changelog specifically mentions improvements for the green line glitch that appeared in 4K HDR recordings on specific app cameras.

Is the April 2026 security patch included?

Absolutely. Samsung has integrated the latest April 2026 security patch into this beta build to ensure maximum device security while testing new features.

When will the stable version of One UI 8.5 be released?

While Samsung has not given an exact date, the progression of the beta program suggests that a stable rollout for the general public could happen by next month.

🔎 In conclusion, the second beta of One UI 8.5 for the Galaxy S23 series represents a significant step toward a stable and fluid user experience. By addressing critical communication bugs and camera artifacts, Samsung is ensuring that the final release will be one of their most polished software updates yet. If you are part of the beta program, this is a mandatory download for improved stability.