New S25 wifi issues

[JKR1979]

My new S25 is dropping wireless connection constantly. My old S21 kept right next to it is perfectly fine. 

Wifi6e

The only connection change i see is S25 - WPA3 connection while S21 - WPA/WPA2. 

It keeps saying WPA3 connection is required. 

I have Xfinity. The latest gigabit connection and latest router. 

Any help would be appreciated. 

[hashi843104]

I experienced unstable Wi-Fi connections on my Galaxy S25.
The issue was resolved by going to Settings → Wi-Fi → Network details → MAC address type,
and selecting Device MAC address instead of the randomized one.
I hope this will be addressed in a future software update.

[ChrisfromIT85]

Thanks for this information. I just turned this off for my home wifi, and I'm hoping it does the trick. I actually had similar issues with work macbooks at our office's wifi due to randomization of MACS, so this feels like a potential actual solution (and reason why the problem is occuring). I really hope Samsung looks into this.

[chrblum]

This is definitely not a viable solution for me! I very much doubt anyway that it does anything that could not be done in a less destructive manner.

[Greenfield13]

Even after update to ONE UI 8 this problem still is happening. Samsung can we please sort this out!!!!

[steve1984]

WTAF is going on at Samsung?! I've had these issues for 2 years with my S23 fe. Worked fine on S20 fe. I refuse to give them more of my cash to be stuck with the same shitty issues.

[steve1984]

My kids A9 tabs work fine, but my more expensive phone is a big fat no. Constant drop out and buffering. Wifi is fine with every single other product I use

[steve1984]

Don't hold your breath. Had it for 2 years on my s23

[chrblum]

I had this problem too with my S25 Ultra, and it appears to have gone away after I enabled developer mode and in there wifi stability mode. You might want to try it.

To enable developer mode, go to Settings, Phone Info, Software, then click on build info several times. A new menu item "developer options" will appear in the settings menu. If you click on it, there's a truckload of settings that are hidden from ordinary users (for a reason), and one of them is "wifi stability mode". Turn it on, and your problem should be gone. At least it worked for me.

(Sorry if the item names are not exact - I do not use English as the phone language setting.)

[ChrisfromIT85]

I will give this a try. It's called "Wi-Fi safe mode" on English models.

Thanks! 

[chrblum]

I think I finally got it sorted. My Wi-Fi network was configured to not only convert ordinary broadcasts and multicasts to unicast, but also ARP packets. This made my phone unreachable for other devices in the network after a while, and I found that this was because it was not responding to ARP requests. I have switched this off in the network's configuration (TP-Link Omada network), and the problem is gone. Safe mode is no longer needed.

Samsung, is it possible that the SoC somehow processes ARP requests in hardware and doesn't do it properly if they come in as unicasts?

(This might not even be considered a bug. Access points often convert multicast/broadcast to unicast on layer 2 because there is only very little bandwidth available to them on WiFi networks because they are only transmitted in DTIM slots, usually 10 per second, to allow receivers to sleep most of the time and still not miss them. But actually that makes sleeping devices that only turn on the receiver for DTIM miss them in case of ARPs.)