At the moment, when looking at the Device List(s), there is no easy way to know which Deco unit each device is using (You have to drill down repeatedly).

If the Device List instead included what Deco unit each device was connected through, at a glance you could see how the network was behaving. eg: What is this phone connected to? The "Main" Deco or the "Landing" Deco?

So I'd suggest adding the connected Deco unit to each device listed. Here is a mock up with it shown for each device after the "Location":-

Some UI Comments

1) In the above mock up I've shuffled the values/columns left, to free up space. At the moment a lot of space is wasted resulting in device descriptions being needlessy cropped etc.

2) You could make including the Deco unit for each device an option. So folks not interested can choose not to display it.

3) As a possibility, if there is only one Location defined (by default "Home"), I'd suggest not even including it on this screen. It's needless information. ie: Don't show "Home" for each device listed if that's the only Location defined.