FP4 5G with lineageos, wifi NOK

Hello,
I have a wifi problem with/without mobile data activated.
When I have 5G activated alone, internet access OK

If I set a wifi network, I have no internet, neither 5G nor wifi.

When I deactivate 5G data and set wifi, it’s OK, I have wifi for a while. If I pick up my phone again after a pause, I no longer have wifi.

In conclusion, only my 5G data connection works perfectly.
The same wifi network I’m talking about works perfectly with computers connected to it.
Many thanks.

Share more details about the wifi. Security type, wifi type (4, 5, 6). Types of IPs it gives (4, 6). Wifi band your phone uses (2.4 or 5 GHz). Signal strength.

These information can be found e.g. by wifi analyzer.

Band wifi = 5 GHz
Largeur bande = 80 MHz
Normes = 802.11a, 802.11n, 802.11ac
WPA 2
IP type = 4

Okay, if you can configure the router, use only 40 MHz channels, not 80. 80 requires very clean environment to work reliably.

What happens if you set your phone to 4G?

@peci1 Same problem with 40 MHz

@lidwien how do I change 5G to 4G ?

Go to the app Settings > network and internet > SIMs > your sim name
Set the Preferred network type from 5G/4G/3G/2G to 4G/3G/2G.

Same problem with 4G selected.

Can you get to some logs from the router?

I’ve reset my internet box and my networks. It’s OK now.

Thanks a lot.

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