@IrvSp SSID are name and name_5g, not same name. The problem is that with android phone / Laptop all is OK, only the iphone12/TV makes the issue.

Hi, Have bought this router. Both bands 2.4g and 5g works fine on laptops and android devices. But iphone12 and LG TV don't see the 5g network. Tried low power, channel width. No help. Please help.