Today I ordered Spitz AX (GL-X3000). A questions I had before ordering but trusting it will provide features I have with GL-AX1800 (wireguard, Adguard, DDNS, Guest WiFi with VPN policies etc.)
My questions are:
1- Will Spitz AX have a DDNS service built-in ?
2- Mobile networks do not provide dedicated IPv4 I believe, how will it impact NAS connected with this router ?
3- Wireguard server, does it work? Without a proper IPv4 ?
4- I am currently using 5G router that has to be close to window for a good reception otherwise it switches to 4G in other locations. Can WiFi antenna extender wire be used to have WiFi antenna elsewhere for a better WiFi signals ?
My answers to questions 1 and 5 are the same as @pierocafa .
For questions 2 and 3, the mobile network does not provide public IPv4, so you cannot access your NAS or WireGuard server via the internet when the device is internet connected with SIM cards. DDNS also requires a public IP to work.
For question #4 Have WiFi antenna elsewhere for a better WiFi signals?
Perhaps yes. If these is a concrete wall to block the Spitz AX WIFI signal, to put a WIFI antenna around the concrete wall may increase the WIFI coverage. But if with wood wall or in open area, Spitz AX WIFI signal is good enough.