Samsung’s June Update Brings S26 AI Features to the Galaxy S25

Samsung has started shipping its June 15, 2026 update to the Galaxy S25 series in the United States, India, and Europe, four days after the same build landed in South Korea. The build, versioned CZF1 and weighing around 950 MB, adds three Galaxy AI features that debuted on the Galaxy S26 lineup in March, but arrives without a Samsung newsroom post or a press release.

The stealthy nature of the rollout is itself the story. Samsung has spent the past three months handing S26 AI capabilities to the S25 series in pieces: an April 20, 2026 Sammy Fans report confirmed the addition of AI call screening, a June 5, 2026 update through the Galaxy Store added Hindi to the supported language list, and now a full OS update brings notification and file summarisation. Owners who have not poked through the Phone app’s settings menu since the spring may be sitting on tools they do not know they have.

What the June 15 Update Brings to the S25

The June 2026 update installs a S26-style Notification highlights tab on the Galaxy S25, S25+, S25 Edge, and S25 Ultra. Sammy Fans describes the new page as “a new notification handling hub with two main tools and a few supplementary settings.” The update weighs around 950 MB, per Sammy Fans, and ships with the PDA build version ending in CZF1.

Three features make the cut. None are new; all three first appeared on the S26 series at launch in mid-March 2026. The new wrinkle is that owners of last year’s flagship are now getting them months later.

And the build itself is unremarkable on paper. The same Sammy Fans report pegs the package at “around 950 megabytes,” a size consistent with a feature drop rather than a security patch.

1. Prioritise notifications. The system pushes important notifications to the top of the panel, even when newer alerts have arrived. Notifications that the AI has flagged are rendered in a separate style, per Sammy Fans, to signal their priority state.
2. Summarise notifications. The AI condenses high volumes of alerts into a single, scannable summary, with a Sammy Fans caveat that the feature supports the device’s set language only and “should not be solely relied on” for accuracy.
3. Summarise compatible files. A new Show file summaries option appears under My Files settings, applying AI summaries to PDF and TXT files, and to recordings saved with Voice Recorder.

Three S26 AI features arrive via build CZF1, around 950 MB, on the S25 series. The update first landed in South Korea on June 11, 2026, per the June 15 rollout details for the S25 series, with the US, India, and Europe following four days later.

Build CZF1 | ~950 MB | June 11, 2026 (South Korea) | June 15, 2026 (US, India, Europe) | 13 languages for Call Screening

The Stealth Pattern Behind Samsung’s AI Rollout

The June patch is the third time in two months that Samsung has pushed an S26 AI feature to the S25 series through a route that does not look like a flagship feature drop. In April, a Sammy Fans report documented the addition of AI call screening to the S25, and a separate report from Android Central chronicled the conflict over whether the feature would ever reach the older phones at all.

On April 3, 2026, a South Korean outlet reported that Samsung had “decided not to support the AI-based convenience features introduced with the Galaxy S26 series on its existing flagship models.” Three days later, on April 6, SamMobile cited a Samsung Community moderator post saying the S26’s AI Call Screening was “on the way to the Galaxy S25 series.” Android Central’s piece on the back-and-forth captures the moment well: “With this conflict, it’ll be worth waiting for now and not jumping to any definite conclusions.”

Two months later, the conclusion is in. The April 20, 2026 Sammy Fans piece confirmed that call screening had landed on the S25, and the June 15 piece adds three more features. None came with the kind of newsroom post Samsung reserves for Unpacked. The pattern is steady: feature arrives, often weeks after the S26 gets it, frequently through a side door (a Galaxy Store language pack, a separate community moderator confirmation, or a mid-month OS update). For an S25 Ultra owner who follows Samsung’s official channels, the timeline looks quiet. For anyone tracking the conflicting April reports on S25 getting the feature, the same timeline looks like a slow drip.

It is worth naming what is not happening here. Samsung has not published a single announcement listing which AI features will land on the S25 and when. Owners who want to know whether they have call screening, or notification summaries, or file summaries, must check each app’s settings, not the news.

Reading a Call, in Real Time, on Your Behalf

Of the AI capabilities now in the hands of S25 owners, call screening is the one that has the clearest use case. Samsung describes the feature on its support page: “The Call screening feature on your Galaxy S26 uses AI to filter and manage calls.” The flow is built around an AI intermediary that picks up an unknown call, asks the caller to state their business, and feeds a live transcript to the user.

The user decides what to do next. The Samsung support page is explicit: “Galaxy AI will vet the call and provide a live transcription. Decide to accept or reject the call during transcription.” If the user picks up, the AI hands the call over. If the user rejects, the AI ends the call. If the user wants to type back, the same page lays out a separate flow: “After Galaxy AI connects, tap Text call to respond with a preset or customized message.” For multilingual calls, Live Translate sits one menu away: Go to Settings, then Call assist, then Live Translate, choose the two languages, and the next incoming call can be translated in real time. The steps to enable call screening on a Galaxy phone are the same on the S26 and the S25.

The promise is that a spam call never rings to the user’s ear. The cost is that a delivery driver whose number the user does not recognise gets handed to an AI first. The CNET coverage of the S26 launch described the feature as a defence “against spammers and telemarketers who buy your phone number online to sell you fake Medicare supplementary plans or warn you that your car insurance is expiring.” Samsung’s own support page notes the limits: the feature may not work if the phone’s storage is nearly full, standard call rates from the provider may apply during screening, and the conversation transcript will appear on screen even when the device is locked.

The S26 Held Onto AI for Two Months

Why the gap between the S26 and the S25? Samsung has not said so on the record, but the rollout timeline tells a story. The S26 series launched preinstalled with One UI 8.5 in mid-March 2026. Sammy Fans puts it this way: “Samsung shipped the Galaxy S26 series in mid-March, preinstalled with One UI 8.5. Even after the official debut, the software remained exclusive to the latest flagship phones for almost two months and helped retain sales momentum.” Call screening, Notification highlights, and the Creative Studio were the AI selling points on the S26 stage, and Samsung’s stable One UI 8.5 release for the S25 and other older devices only began in early May 2026, with a global expansion on May 11.

CNET’s launch coverage of the S26 Unpacked event set the original tone: “Call screening is new to the Galaxy S26 series. It lets AI answer unknown phone calls for you. Galaxy AI picks up the phone, summarizes the call and gives you the rundown so you can decide whether or not you want to answer the call yourself.” The piece frames it as the one feature that justified the AI label on Samsung’s newest phones. The S26 launch case for AI call screening was that the rest of the AI suite on the device was less useful, and call screening was the rare one with a concrete, daily use case.

That posture does not survive the S25 update untouched. The two-month window is over. By the end of June 2026, per Sammy Fans, One UI 8.5 is expected to be available on “every eligible device, everywhere.” The 44-device rollout list covers thirteen Galaxy S phones, nine Galaxy Z foldables, eleven Galaxy A models, and eleven Galaxy tablets, a list that includes everything from the Galaxy S23 to the Galaxy Tab S9 FE+.

Where the Language Pack Comes In

Call Screening works in 13 languages, per Samsung’s Galaxy AI page, but the number itself does not tell the whole story. Languages arrive on a Samsung schedule, not all at once. The June 5, 2026 addition of Hindi to the list, which came via a Galaxy Store language pack update rather than a full OS update, is the clearest example. Sammy Fans’ piece on the Hindi rollout notes that “X user HarshRaj confirmed that his Galaxy S25 Ultra has added Hindi as a supported language inside Call Screening menu,” and that the addition came “after the recent update for Samsung’s language pack delivered through Galaxy Store.”

This matters for one practical reason: a Galaxy owner in India, or in any market where the supported language is not English, cannot assume that call screening will work the day the OS update lands. The list of supported languages, as of March 2026, runs to English, Portuguese, Spanish, French, German, Italian, Chinese (Simplified), Japanese, Korean, Thai, Polish, Vietnamese, and Hindi. Samsung’s full Call Screening language list also notes the broader constraints: “Call Screening feature for Call Assist may vary by country, region and language. Feature needs to be manually activated.”

• English
• Portuguese
• Spanish
• French
• German
• Italian
• Chinese (Simplified)
• Japanese
• Korean
• Thai
• Polish
• Vietnamese
• Hindi

The mechanics of the language pack are also why the rollout pattern looks fragmented. A user who updates the OS in June without updating the Galaxy Store language pack at the same time may not see Hindi as an option in Call Screening. Samsung’s own page on the feature leaves the path explicit: update the language pack, then check the Call Screening menu.

Steps to Check the Build and the Settings Menu

For an S25, S25+, S25 Edge, or S25 Ultra owner, the practical question is whether the build is already on the device, and whether the feature is on. Samsung’s support page covers the second question; the Sammy Fans piece covers the first.

To verify the build, the device’s settings should show a software update with the build identifier ending in CZF1. Sammy Fans puts the size at 950 MB and dates the South Korean rollout to June 11, 2026, with the US, India, and Europe on June 15, 2026. The exact time of arrival within those windows will vary by carrier and by country, and Sammy Fans flags that the rollout is ongoing.

To turn on call screening, the support page walks through the flow: open the Phone app, tap the three vertical dots in the top right corner, tap Settings, tap Call screening, and turn on the switch. The same page adds three settings worth knowing: Auto screen calls (turn on automatic screening for unknown callers), Language (select or download a preferred language for transcription), and Voice (customise the assistant’s voice and adjust speech speed). Text call, the option to respond by typing rather than speaking, lives one tap away under Call assist.

And the bigger question, when the rest of the AI features will hit every eligible device, has a Sammy Fans answer. The June 15 piece reports that “Samsung’s every eligible device for the new software is expected to receive it (everywhere) by the end of June 2026.” The One UI 8.5 rollout was, per Sammy Fans, “one of the longest-running Beta Programs in Samsung’s history,” starting in early December 2025 and wrapping in early May 2026.

Frequently Asked Questions

What is in Samsung’s June 15, 2026 update for the Galaxy S25?

The June 15, 2026 update brings three S26 AI features to the Galaxy S25 series. The package is build CZF1, weighs around 950 MB, and adds Prioritise notifications, Summarise notifications, and Summarise compatible files, the last of which adds AI summaries to PDF and TXT files and to Voice Recorder recordings through the My Files app, per Sammy Fans.

How do I enable Call Screening on my Galaxy phone?

Open the Phone app, tap the three vertical dots in the top right corner, tap Settings, then Call screening, and turn on the switch. From there, Auto screen calls handles unknown callers, Language controls the transcription, and Voice customises the AI’s tone. To type back to a caller, tap Call assist and choose Text call. The flow is the same on the S26 and the S25, per Samsung’s support page.

Which Galaxy phones support Call Screening?

Call Screening debuted on the Galaxy S26, S26+, and S26 Ultra at launch in mid-March 2026, per CNET, and the S25 series got it via a separate update in April 2026. Broader availability on older models depends on whether a given device is on Samsung’s One UI 8.5 rollout list, and the company has not announced a complete compatibility roster.

How many languages does Call Screening support, and how did Hindi arrive?

Call Screening supports 13 languages: English, Portuguese, Spanish, French, German, Italian, Chinese (Simplified), Japanese, Korean, Thai, Polish, Vietnamese, and Hindi. Hindi was added on June 5, 2026, through a Galaxy Store language pack update, per Sammy Fans, and showed up in the Call Screening menu on at least one S25 Ultra the same day.

Will One UI 8.5 reach every eligible device by the end of June 2026?

Yes, per Sammy Fans. The 44-device rollout list includes thirteen Galaxy S phones, nine Galaxy Z foldables, eleven Galaxy A models, and eleven Galaxy tablets, and the publication expects every eligible device to receive the software in every market by the end of June 2026. The exact timing within that window will continue to vary by country and by carrier.