This update includes improvements to functions as listed below.
The exact changes may differ depending on your device model, country, and service provider.
To get the best from your device, please keep your device up to date and regularly check for software updates.

Galaxy Z Flip4 (SM-F721U)

Build Number : F721USQSAIZH2

Android version : B(Android 16)

Release Date : 2026-09-03

Security patch level : 2026-08-05

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

Build Number : F721USQSAIZG1

Android version : B(Android 16)

Release Date : 2026-07-27

Security patch level : 2026-07-05

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

Build Number : F721USQSAIZF1

Android version : B(Android 16)

Release Date : 2026-06-29

Security patch level : 2026-06-05

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

Build Number : F721USQSAIZE2

Android version : B(Android 16)

Release Date : 2026-05-21

Security patch level : 2026-05-05

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

Build Number : F721USQS9IZD1

Android version : B(Android 16)

Release Date : 2026-04-22

Security patch level : 2026-04-05

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

Build Number : F721USQS9IZC1

Android version : B(Android 16)

Release Date : 2026-03-30

Security patch level : 2026-03-05

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

Build Number : F721USQS9IZB6

Android version : B(Android 16)

Release Date : 2026-03-02

Security patch level : 2026-02-05

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

Build Number : F721USQS8IZA1

Android version : B(Android 16)

Release Date : 2026-01-27

Security patch level : 2026-01-01

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

Build Number : F721USQS8IYL1

Android version : B(Android 16)

Release Date : 2025-12-18

Security patch level : 2025-12-01

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

Build Number : F721USQS8IYK3

Android version : B(Android 16)

Release Date : 2025-11-24

Security patch level : 2025-11-01

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.