Problems viewing 3840x2160 mode

[tabertelsen_537234902716544]

I have problems viewing 3840x2160 mode in my android app. I have a Samsung S22+ phone. I can play in all other modes but when I use the 4K mode it just loads the kbps and I get no picture. 
The problem is the same whether I use wifi or 4g+. 

My nabo has the same setup as I have and don't see problems running i 4K mode on my setup. He use a S20ultra phone.
We have runned trough the settings and there is no difference in the phones.
Both my phone and NVR has the latest firmware.
I hope you can help.
Kind regards

[Reolink Fiona]

@tabertelsen_537234902716544
Can you try to disable the hardware decoding mode? APP left menu->Settings->Hardware Decoding

Guide:https://support.reolink.com/hc/en-us/articles/900000587506-How-to-Enable-Disable-Hardware-Decoding-on-Reolink-Android-App

[big_ted]

@tabertelsen_537234902716544
I use a s21 and a s21 ultra and both will not load video unless hardware decoding switched off