File transfer: although I choose the automatic connection, the Android smartphone still rejects the DSLR wifi, since the internet is not found

The first time I connect my smartphone to the DSLR Wi-Fi connection, a message box appears stating that the Internet can not be accessed, and that I am asked if I want to keep the connection. Then, just press "yes, do not ask me again", and everything seems to be going well. I use the dedicated Canon / Nikon application, I download photos and I disconnect. When I want to connect again, I find that my smartphone does not automatically connect to DSLR's Wi-Fi. So I open the wifi menu on my smartphone, I see my dslr's network and I play it, but I get the strange message "this network is not connected to the Internet, so it will not be used". I can not make my connection work again until I turn off the wifi and turn it back on both DSLR and Smartphone. Then, it goes as if I was connecting it for the first time. While working in real-time journalism, this small problem causes me some headaches (especially when my boss wants the photo "right now")
either using Canon Camera Connect for EOS 80d and EOS Rebel t6s / 760D, or Nikon WMU for D750. I had the same behavior on a G3 bike when I had one. Could it be a Motorola problem?

By the way, Canon's Wi-Fi application far surpasses Nikon. In Nikon wmu you can not even see anything until you have scanned the entire memory of the camera, and the DSLR option "send to your smartphone" works always reduces the resolution of files.