The latest security patch level shown in the cited Samsung Galaxy S26 records is August 5, 2026. Some firmware carrying that patch was released in September. Samsung lists updates separately by model, and release dates and build numbers vary by model, country, and carrier—so there is no single rollout history that applies to every Galaxy S26.
How to read the Galaxy S26 update history
Samsung’s device records distinguish three details that are easy to confuse: the firmware release date, the build number, and the security patch level. A September release can carry an August patch level; the release date does not mean that the phone received a patch dated that month.
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The entries below are the dated releases shown in the cited records for the specific models. Samsung says exact changes may differ by model, country, and service provider. These records are not a complete chronology for every S26 variant or market.
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Samsung lists Android 16 for these entries. The dates below are Samsung’s release dates for this model record.
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| Release date | Build | Security patch level | Samsung’s summary |
|---|---|---|---|
| 2026-08-31 | S942BXXS4AZHA | 2026-08-05 | Security improvement |
| 2026-07-15 | S942BXXS4AZG5 | 2026-07-05 | Security improvement |
| 2026-06-15 | S942BXXS3AZF1 | 2026-06-05 | Security improvement |
| 2026-05-20 | S942BXXS2AZE2 | 2026-05-05 | Security improvement |
| 2026-05-06 | S942BXXU2AZDE | 2026-04-05 | Stability and security improvements |
| 2026-04-13 | S942BXXS2AZCO | 2026-04-05 | Security improvement |
| 2026-03-25 | S942BXXU1AZCF | 2026-02-05 | Stability and security improvements |
| 2026-03-18 | S942BXXS1AZC7 | 2026-02-05 | Security improvement |
Source: Samsung Galaxy S26 SM-S942B update record.
Galaxy S26 SM-S942U1 updates
Samsung lists Android 16 for the entries below. This record’s latest listed firmware release is September 3, with the August 5 patch level.
| Release date | Build | Security patch level | Samsung’s summary |
|---|---|---|---|
| 2026-09-03 | S942U1UES4AZH5 | 2026-08-05 | Security improvement |
| 2026-07-15 | S942U1UES4AZG3 | 2026-07-05 | Security improvement |
| 2026-06-16 | S942U1UES3AZF1 | 2026-06-05 | Security improvement |
| 2026-05-28 | S942U1UES2AZE1 | 2026-05-05 | Security improvement |
| 2026-05-11 | S942U1UEU2AZDE | 2026-04-05 | Stability and reliability improvement |
| 2026-04-08 | S942U1UES2AZCM | 2026-04-05 | Security improvement |
| 2026-03-30 | S942U1UEU1AZCF | 2026-02-05 | Stability and reliability improvement |
| 2026-03-12 | S942U1UES1AZC7 | 2026-02-05 | Security improvement |
Source: Samsung Galaxy S26 SM-S942U1 update record.
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What the SM-S942Q record adds
Samsung’s SM-S942Q record lists a September 15, 2026 release, build S942QOPS1AZH9, with Android 16 and the August 5 security patch level. Earlier entries include a July 13 release with the June 5 patch level and May releases with the April 5 patch level. That record also demonstrates why firmware release date and patch level should be read separately.
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1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsSource: Samsung Galaxy S26 SM-S942Q update record.
Why an October bulletin does not confirm an October S26 patch
Samsung’s Security Maintenance Release (SMR) bulletins describe patches in the broader release program, including Google and Samsung security fixes. Samsung notes that some chipset-vendor patches may be delivered in a later package. A monthly bulletin does not establish that a particular Galaxy S26 model, carrier, or region has received that month’s patch.
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At the October 7, 2026 snapshot date, Samsung’s October bulletin was available, but the cited device records did not establish an October patch build for every S26 variant and region. The SM-S942U1 record reviewed ends with a September 3 firmware release carrying the August 5 patch level. Check the record for the exact model and market rather than inferring device availability from a bulletin.
Sources: Samsung Mobile Security Maintenance Release bulletins and Samsung Mobile Security firmware update scope.
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Check your phone’s model and patch level
- On the phone, open Settings → About phone and note the model number.
- Open Settings → Security and privacy → Updates → Security update to view the installed Android security patch level. Menu wording can vary by software version.
- Compare the model number and patch level with Samsung’s update record for that model and your market. If you compare firmware records, check the build and release date as well as the patch level.
Samsung says its firmware security update cadence can be monthly, quarterly, or biannual, depending on the device and market. Its stated scope includes Android OS security issues released by Google and Samsung-specific issues; timing varies by model and region.
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