S23 Ultra Wifi Issue

[Bashblues]

It seems my 6 days old S23 Ultra has a defect. Compared to my Note 20 Ultra its speed test is way below- like 100 Mbps difference. Sometimes it's okay but most of the time it's not. I tried to ignore it, maybe there's really an issue with my connection but I noticed that my FB messenger in Note 20 ultra and PC are receiving messages and my S23 Ultra didn't (it takes a lot of time) even if I force update it. Can you guys try as well? Thanks

Update: added pics and videos as proof.

Troubleshooting done.

1) Tried other modem/router.

2) Tried other network.

3) Restarted the device, the routers and all.

4) Reset Network Settings.

5) Reset to Factory Settings.

6) Brought to Service Center and was left there for 3 days (reprogram) but still the same. See latest photo below.

As of Feb 18 post reprogram from Service Center

[butete]

im using deco mesh for my wifi it maximizes and stability on all our devices

[butete]

as i can see you are on wifi 6 as well thats really odd

[maxq1]

Long shot but maybe you're assigning a static addy on the S23 through the device itself. If you need to, do so through your router/modem instead. HTH

[butete]

+1 static

[Bashblues]

Hmm i tried connecting to the base modem and not the tp-link wifi 6 router still the same.

[Bashblues]

I didnt do anything it just arrived and I used it immediately.

[butete]

thats very strange have you tried network reset on your ultra

[Bashblues]

I haven't will do that in a bit.

[Bashblues]

Network reset done. Same pa rin