Sometimes at home or out somewhere, but not always or even very often, I get a noise & vibration on my Windows 8.1 smartphone and then by sliding down the main screen, I see Wi-Fi Calling ER04 DNS Error. This has happened when I’m sitting 2’ from the wireless router at home and also over at a restaurant that I spend a lot of time at as I'm just killing time and messing around on Facebook (FREEB!RD’s World Burrito) . I think it has also happened in a few other places but I'm not sure.
They have a FREE WI-FI sign on their door to bring in more happy customers.
Is this a weak Wi-Fi router signal strength deal or am I just too far from the wireless router and if neither of those, then what is this all about?
I have WI-FI CALLING set ON and I have it set with Cellular Preferred.
I see this when I slide the main screen down on my Windows 8.1 Nokia Lumia 635 to see Settings. When I look at this as it is happening, it seems as if it has one about every 3 minutes.