Samsung Galaxy S23 series, Flip5, A36, and A35 receive second One UI 8.5 beta update

Posted on April 28, 2026, 10 a.m.

Samsung Expands One UI 8.5 Beta 2 to More Devices, Including Galaxy S23 Series and Popular A-Series

Samsung continues its phased rollout of the One UI 8.5 beta program, with the second iteration now reaching a broader range of devices. Galaxy S23 series owners, along with those rocking the Galaxy Z Flip5, Galaxy A36, and Galaxy A35, are now eligible to download this latest beta build, bringing further refinements and security enhancements.

Samsung Galaxy S23 Ultra camera array close-up.

Galaxy S23 Series Gets April Security Patch and Bug Fixes

The Galaxy S23, S23+, and S23 Ultra are receiving the One UI 8.5 beta 2 update in India and South Korea. This substantial update, weighing in at over 700MB, carries the firmware version ending in ZZDP and crucially includes the April 2026 security patch. Alongside enhanced security, the update addresses several key bug fixes:

Call Screen Improvements: Resolved issues with late or black incoming call screens.
Proximity Sensor Fixes: Improved proximity release behavior during calls.
Video Recording Stability: Addressed green line artifacts when recording 4K HDR video on certain camera apps.
Bluetooth Stability: Patched Bluetooth crash issues.
Accessibility Enhancements: Fixed multi-touch malfunctions that occurred after enabling accessibility features.

Galaxy Z Flip5 Benefits from Audio and Display Tweaks

The innovative Galaxy Z Flip5 is also embracing the One UI 8.5 beta 2 update, identifiable by firmware version F731NKSU6ZZDN. This update, available in South Korea, is approximately 760MB and incorporates the April 2026 security patch. Key improvements for the Flip5 include:

Enhanced Speaker Volume: Improved speaker call volume and sound quality, particularly during driving.
Contact Information Display: Ensures contact images and information are prominently shown for incoming calls from saved contacts.
On-Screen Notifications: A brief pop-up notification is now displayed even when the screen is off.
Contact Saving Fix: Resolved screen switching issues after saving contacts within folders.
Camera App Performance: Addressed behavior errors within the Camera app.

Galaxy A36 and A35 Receive System and Bluetooth Optimizations

Samsung's popular mid-range offerings, the Galaxy A36 and Galaxy A35, are also part of this beta expansion. Both devices are receiving the One UI 8.5 beta 2 update in India. The Galaxy A36 update (firmware version A366EXXU8ZZD7) is around 650MB and brings the April 2026 security patch along with the following fixes:

Bluetooth Connectivity: Fixed an issue where Bluetooth Autoscan failed upon entering Bluetooth settings.
Quick Panel Responsiveness: Improved sluggishness or delay when lowering the Quick Panel.
Navigation Bar Compatibility: Resolved an issue where the message input window overlapped the navigation bar.
System Stability: Addressed System UI ANR (Application Not Responding) issues encountered after FOTA (Firmware Over-The-Air) updates.

Similarly, the Galaxy A35 update, a larger download exceeding 1GB (firmware version A356EXXU9ZZD9), also includes the April 2026 security patch and shares the same core improvements as the A36:

Bluetooth Connectivity: Fixed an issue where Bluetooth Autoscan failed upon entering Bluetooth settings.
Quick Panel Responsiveness: Improved sluggishness or delay when lowering the Quick Panel.
Navigation Bar Compatibility: Resolved an issue where the message input window overlapped the navigation bar.
System Stability: Addressed System UI ANR (Application Not Responding) issues encountered after FOTA (Firmware Over-The-Air) updates.

For users enrolled in the One UI 8.5 beta program who have not yet received the update, a manual check is recommended. Navigate to Settings > Software update on your device. Source