Fresh/wise - Revision history

AidenIsik: Change status to be in line with other in-progress watches

2026-03-15T20:27:13Z

Change status to be in line with other in-progress watches

← Older revision		Revision as of 20:27, 15 March 2026
Line 4:		Line 4:
	\|Model=Samsung Galaxy Watch 4 (Standard & Classic)		\|Model=Samsung Galaxy Watch 4 (Standard & Classic)
	\|ReleaseDate=2021-08-27		\|ReleaseDate=2021-08-27
	\|Status=~~unsupported~~		\|Status=port in progress
	\|Stars=0		\|Stars=0
	\|Chipset=exynos5515		\|Chipset=exynos5515

AidenIsik: Add metadata

2026-03-15T20:03:40Z

Add metadata

← Older revision		Revision as of 20:03, 15 March 2026
Line 1:		Line 1:
			{{Watches
			\|Name=fresh
			\|OtherNames=wise
			\|Model=Samsung Galaxy Watch 4 (Standard & Classic)
			\|ReleaseDate=2021-08-27
			\|Status=unsupported
			\|Stars=0
			\|Chipset=exynos5515
			\|KernelVersion=7.0-rc3
			\|AndroidVersion=redvelvetcake
			\|StatusDisplay=bad
			\|StatusTouch=bad
			\|StatusBluetooth=bad
			\|StatusHaptics=bad
			\|StatusTiltToWake=bad
			\|StatusLightSensor=bad
			\|StatusAlwaysOnDisplay=bad
			\|StatusDualDisplay=bad
			\|StatusMicrophone=bad
			\|StatusSpeaker=bad
			\|StatusCompass=bad
			\|StatusSteps=bad
			\|StatusHeartRate=bad
			\|StatusUSB=bad
			\|StatusWLAN=bad
			\|StatusGPS=bad
			\|StatusNFC=bad
			\|StatusCellular=bad
			\|StatusCamera=missing
			\|StatusCrown=missing
			\|StatusHands=missing
			}}
			[[Category:Watches]]
	==Description==		==Description==
	Fresh (Samsung Galaxy Watch 4) and Wise (Samsung Galaxy Watch 4 Classic) are feature-rich, round smartwatches developed by Samsung. They released with Android 11, and use the Exynos W920 (S5E5515) Cortex-A55 based AArch64 SoC. Their hardware is very similar to that of the Samsung Galaxy Watch FE (codenamed [[Lucky7]]).		Fresh (Samsung Galaxy Watch 4) and Wise (Samsung Galaxy Watch 4 Classic) are feature-rich, round smartwatches developed by Samsung. They released with Android 11, and use the Exynos W920 (S5E5515) Cortex-A55 based AArch64 SoC. Their hardware is very similar to that of the Samsung Galaxy Watch FE (codenamed [[Lucky7]]).

AidenIsik: Add information on UART output.

2026-03-15T18:39:30Z

Add information on UART output.

@@ Line 60: / Line 60: @@
 '''NOTE: While Samsung disabled bootloader unlocking on their phones with the OneUI 8 (Android 16) update, they did not do so for their watches (as of 26/02/2026). All firmware versions of this watch can be unlocked.'''
-The bootloader of the Galaxy Watch FE can be unlocked using the following steps, with the buttons facing to the right:
+The bootloader of the Galaxy Watch 4 can be unlocked using the following steps, with the buttons facing to the right:
 *Open settings.
@@ Line 92: / Line 92: @@
 To connect to the watch over USB, you must connect the ID pin to GND through approximately 150kOhms of resistance (it doesn't have to be exact).

AidenIsik: Create Galaxy Watch 4 page based on Galaxy Watch FE page

2026-02-26T11:24:13Z

Create Galaxy Watch 4 page based on Galaxy Watch FE page

New page

==Description==
Fresh (Samsung Galaxy Watch 4) and Wise (Samsung Galaxy Watch 4 Classic) are feature-rich, round smartwatches developed by Samsung. They released with Android 11, and use the Exynos W920 (S5E5515) Cortex-A55 based AArch64 SoC. Their hardware is very similar to that of the Samsung Galaxy Watch FE (codenamed [[Lucky7]]).

The Galaxy Watch 4 Classic also has a rotating bezel which can be used for navigation.

See the [https://www.gsmarena.com/samsung_galaxy_watch4-11045.php GSMArena] page for more hardware details.

There are eight different variants of this watch:
{| class="wikitable"
|+
!Codename
!Model Number
!Model Name
!Display Size
|-
|freshbs
|SM-R860
|Samsung Galaxy Watch 4 (WiFi)
|40mm
|-
|freshus
|SM-R865
|Samsung Galaxy Watch 4 (LTE)
|40mm
|-
|freshbl
|SM-R870
|Samsung Galaxy Watch 4 (WiFi)
|44mm
|-
|freshul
|SM-R875
|Samsung Galaxy Watch 4 (LTE)
|44mm
|-
|wisebs
|SM-R880
|Samsung Galaxy Watch 4 Classic (WiFi)
|42mm
|-
|wiseus
|SM-R885
|Samsung Galaxy Watch 4 Classic (LTE)
|42mm
|-
|wisebl
|SM-R890
|Samsung Galaxy Watch 4 Classic (WiFi)
|46mm
|-
|wiseul
|SM-R895
|Samsung Galaxy Watch 4 Classic (LTE)
|46mm
|}

==Bootloader Unlocking==
'''WARNING: Unlocking the bootloader will trip Knox efuses! Connections inside the SoC will be irreversibly severed, you will permanently lose the ability to use features such as Samsung Pay, and you will get a warning on each startup stating that the device's software "may be corrupt" (this can be ignored).'''

'''NOTE: While Samsung disabled bootloader unlocking on their phones with the OneUI 8 (Android 16) update, they did not do so for their watches (as of 26/02/2026). All firmware versions of this watch can be unlocked.'''

The bootloader of the Galaxy Watch FE can be unlocked using the following steps, with the buttons facing to the right:

*Open settings.
*Go to "About watch" -> "Software information"
*Tap the software version several times until you are informed that developer mode has been enabled.
*Locate the "OEM unlocking" option in the developer options menu, and switch it on.
*Hold both buttons on the side of the watch until the Samsung logo appears with the "rebooting..." text below it.
*Quickly press the upper button several times to open the bootloader menu.
*Use the upper button on the side of the watch to navigate to the "Bootloader unlock" option and select it. A short click moves to the next option and a long hold selects an option.
*Press the upper button to unlock the bootloader.
*After rebooting, if you end up in the recovery, follow the steps presented to wipe the device's data.
*Your bootloader is now unlocked.

==Repair==
This watch is relatively easy to disassemble to repair. There are four Y00 screws on the back, then everything else just pulls apart.

It uses a rubber gasket for water resistance, so as long as it isn't damaged during disassembly it should be able to be reused, and water resistance not compromised.

See the [https://www.ifixit.com/Device/Samsung_Galaxy_Watch_4 iFixit repair guides] for detailed steps for various repairs.

==USB==
There are no USB connections exposed anywhere on the exterior of this watch. There are however internal USB pads near the top edge of the watch, which can have a USB cable soldered onto them.

The pinout, with the top edge facing towards you, is as follows from left to right:

*Vcc
*ID
*D+
*D-
*GND

To connect to the watch over USB, you must connect the ID pin to GND through approximately 150kOhms of resistance (it doesn't have to be exact).