Samsung Galaxy Z Flip4

Firmware is specific to the model code. Find yours on the box or in Settings › About phone, then pick it below.

ModelSold inFirmwareLatest build

SM-F721B · Galaxy Z Flip4 Bespoke EditionSold in58 countriesFirmware93 CSCs · 4,662 buildsLatest buildF721BXXSCIZH3 · Aug 13, 2026→

One UI and Android versions of the Galaxy Z Flip4, with the first release of each.

1. Oct 2025

   One UI 8 · Android 16

   Official release: F721BXXUAIYIF (SM-F721B)

2. May 2025

   One UI 7 · Android 15

   Official release: F721USQU8HYD9 (SM-F721U)

3. May 2024

   One UI 6.1 · Android 14

   Official release: F721BXXU6FXE3 (SM-F721B)

4. Dec 2023

   One UI 6 · Android 14

   Official release: F721USQU3EWL1 (SM-F721U)

5. Feb 2023

   One UI 5.1 · Android 13

   Official release: F721BXXU1CWAC (SM-F721B)

6. Nov 2022

   One UI 5 · Android 13

   Official release: (SM-F721B)

As published by Samsung for the SM-F721B; other model codes can differ (chipset, network bands).

Sold in 74 countries.