I'm not using my phone, I'm USB connected to a windows pc, so hopefully it is not an issue. I just want the pedals connected in stereo by this spacesaving approach.
That said, if my pedals are not connected with the Ultrawave first in line, I had issues with these TR/TR connectors. Maybe related to not using TRS/TR, but I had not noticed these SA connectors were TRS/TR and did not explore that as a possible root cause.
They are working, but it would be good to know if there is more to be aware of when connecting the pedals with TRS/TR vs. TR/TR.