Hi,Yes. Response was "wontfix" / "wehavenoideawhatisgoingonhere" type:
Your feedback has been filed accordingly in the 'Class 10 SD Cards fault' category for future referrence. Just a reminder of the recommended SD card type for you in case the matter is causing you grave inconvenience for which I am sorry: The only Class 10 card that is proven to work for Android devices flawlessly so far: 64GB SanDisk Ultra microSDXC UHS-1 This is ideal for Android powered and other smartphones and tablets.
I can upload 32 GB of dummy files and "move app to sd" starts working immediately without even lifting phone off the desk.
Does not sound like mechanical issue.
just to let you know,
Cat S50 could not provide an answer, just said they would relay my feedback to the relevant department.
More importantly, when I created a fat32 partition with 50GB (51200MB).
I can use the native app move tool to move apps to the FAT32 partition without an error message.