iPhone connects to external router but does not get internet - nat or some setting issue???
My sister's old Belkin router died and she has tried to replace it with both an Asus and a Netgear router and has the same problem with both. We call tech support last night and they could not resolve her problem. She is on Gen4 using a Hughes Jupiter HT1100 which does NOT have builtin wifi, so she connects to an external wifi router for that. Her computer is cabled to the router. Her HP printer connects wirelessly to the router (both tried) and works, and iPhones connect to the router, but do not connect to the internet. The routers show the iPhones as attached devices, but the iPhones say "no internet connection, If this is your Wi-Fi network, try restarting the modem and the router, or contact your ISP." This has happened with an iPhone 9, 12 and 13 with current and most recent prior IOS software. She recalls much difficulty getting the old Belkin to work at first requiring calls to tech support, but she doesn't recall the details, and the Belkin died so we could not see how it was set up. We have searched Apple, Asus and Netgear forums and have not found the exact answer. Some similar problems with cable modems and routers have mentioned "double NAT" as a problem, and to use "bridge mode" but they were not clear answers. Has anyone come across or solved this?