My Fairphone 4 i bought 1 1/2 years ago has a problem with my Wifi. Every time i disconnect from my network it doesn't reconnect properly. It just connects for like 2-3 seconds then it disconnects again, uses my mobile connection and then it reconnects for another 2-3 seconds. I replaced my router already and every other device that uses wifi (my laptop) has no such issue. I also reseted my phone, changed from 2,4 Ghz to 5 Ghz and tried to use a less occupied wifi channel. And i updated my phone. Is there a know fix for that problem or do i have to contact support and get a new one?
A little off topic maybe but why not Install openwrt and use your isp router as a modem or is that not possible?