You may test this situation bu putting anything else in that port. If work, (mouse, keyboard, flash, ext.drive) this port is working. I hope.

But even if phone act like mass storage, it does not give hope that eCS will can see it.

What is sad is that You have more chance by using old good Warp without LVM.

Often those problems aren't related to USB at all, than a LVM and recognising partition type. You may try to prepare card (partition) to one LVM can handle, and then put to phone, consult old topics.