iPad Can Connect, iPhone Cannot

[TFitzpatri8]

If you don’t find your answer here in the user-to-user forums, that’s what I’d do.

[ucdscott]

TFitzpatri8 What info do you need to troubleshoot this issue? Should I call support?

[ucdscott]

Both devices are on the same LAN as the Insteon hub. I'm a 20 year IT vet; there's nothing wrong with my network.

[TFitzpatri8]

Are both devices connecting to the same lan, or is one connecting to a guest network or a wifi extender?

[ucdscott]

The Insteon app on my iPhone errors with, "Unable to establish a connection with your Insteon Hub." I get the same error when connected to wi-fi or cellular network.

The Insteon app on my iPad connects without issue. I'm using the same credentials on both devices. I logged out and back into Insteon on my iPad and it works perfectly.

I do receive notifications from the Insteon app on my iPhone so it appears to be authenticated.

Insteon hub v2245-222
My iPhone is running iOS v12.4.9
I'm using the "Insteon for Hub" app on both my iPad and iPhone