Samsung’s Surprise Second April Update and One UI 8.5 Beta 2

Samsung is ending April with a flurry of updates, and nobody saw the timing coming. Just as April wraps up, the company has pushed a second April security update to the Galaxy S26 and Galaxy S25 series.

And not only that, but also dropped One UI 8.5 Beta 2 for six additional devices, including the Galaxy S23 trio, the Galaxy Z Flip5, Galaxy A36, and Galaxy A35. Two separate update tracks, one very busy Monday morning for Galaxy owners.

The Surprise Second April Update for Galaxy S26 and S25.

Confirmed on the Samsung US Community forum, the second April update for the Galaxy S26 Ultra is now rolling out, just weeks after the first April patch.

The Galaxy S25 series is also receiving the same update, with both lineups showing a new build number that was not previously seen.

What stands out is the unchanged changelog. According to SammyGuru, which first spotted the rollout in Mexico with firmware build AZD4, the official changelog is the same as the earlier April release, with no listed differences, making the update’s purpose unclear.

Such back-to-back updates typically point to region-specific carrier optimizations, silent bug fixes not publicly documented, or network compatibility adjustments.

With Galaxy users in the US now getting it, a carrier-related change appears likely. This groundwork likely secures the memory-tagging and proximity-sharing features expected for the One UI 9 transition, though Samsung has not confirmed anything.

One UI 8.5 Beta 2: Six Devices, Real Fixes

The bigger news for a wider audience is One UI 8.5 Beta 2, which is simultaneously rolling out to the Galaxy S23, Galaxy S23+, Galaxy S23 Ultra, Galaxy Z Flip5, Galaxy A36, and Galaxy A35 today.

Galaxy S23 Series Regional Rollout and Technical Specs

According to GSMArena, the Beta 2 update for the Galaxy S23 series is rolling out in South Korea and India with firmware ending in ZZDP. Weighing over 700 MB, this update carries the April 2026 security patch alongside targeted bug fixes.

The Galaxy S23 series changelog addresses five specific issues:

Incoming call screen arriving late or showing a black screen in certain states
Proximity sensor release errors during active calls
Green line artifacts when recording 4K HDR video in third-party camera apps
Bluetooth crash fix
Multi-touch malfunction following accessibility setting changes

Galaxy Z Flip5 Update Details and Sound Enhancements

The Galaxy Z Flip5 Beta 2 update is rolling out in South Korea with firmware version F731NKSU6ZZDN, also weighing approximately 760MB.

Its changelog covers five separate fixes:

Speaker call volume and poor sound quality while driving
Contact images are now showing on incoming calls
Brief pop-up notifications appear even when the screen is off
Fixed screen switching errors after saving contacts to folders
A Camera app behavior fix

Galaxy A36 and A35 Stability for the Mid-Tier

For owners of the Galaxy A36 and A35, One UI 8.5 Beta 2 brings the same April 2026 security patch alongside stability improvements, expanding the beta program meaningfully beyond Samsung’s flagship tier.

How to Get Both Updates Today

For those following daily Android news to keep their hardware current, the process remains streamlined. To grab the second April security update on the Galaxy S26 and S25, go to Settings > Software update > Check for updates.

For One UI 8.5 Beta 2 on Galaxy S23, Z Flip5, A36, and A35, the update will appear in the same location if your device is enrolled in Samsung’s beta program via the Samsung Members app.

Source: SECOND APRIL UPDATE S26 ULTRA