I just got my Z5 premium and swapped my 64gb memory card out of my Z1 into the new handset. The Z5 seems to be having difficulty detecting the sd card. If I go to Settings>Storage the option to mount the sd card is available but doesn't appear to do anything. I get a message in the status bar saying "checking sd card for errors" which clears after a few seconds with no errors, however following this the card is still not visible in file manager and the mount sd card option is still showing. Also none of the transfer data or apps to sd card options are available.
Alternatively, if I select the Erase option, the handset appears to erase the card, it doesn't produce any errors but when the process completes the card still isn't recognised and it still won't mount.
If I put a smaller card in (I had a spare 1GB card) it seems to work fine; I also have a 16GB card which I haven't had chance to try yet. The 64gb card, as I mentioned, works fine in my old Z1 and can be read by a PC without any problem so I'm fairly sure there's no issue with the card itself. I've also tried re-formatting the card using a PC (formatted as exFAT) and also a factory reset of the phone (which should not have been necessary because the phone was new out of the box).
I think it's a San Disk UHS 1. I know the specs say it should support up to 200Gb, which is why this problem is a massive disappointment considering this is supposed to be a flagship phone. I kinda need a big memory card; I use my phone as a Walkman and take loads of pictures, 32Gb of internal storage simply doesn't cut it, not when you factor in all the space lost to the OS and apps
Windows 10 wouldn't let me format it as Fat32, only exFAT or NTFS. However, even after formatting in the PC, the Z1 and Samsung Tab 3 will read the card.
Out of curiosity, do you have another SD card of the same capacity but a different brand? The only reason I ask is I have had some strange things happen with SD cards - sometimes a phone just doesn't seem to like a particular brand (even though there is nothing wrong with it) but will work with another.
As a matter of interest, have you tried a different file manager? I'd just like a rule out an issue with the internal one. The problem will be that it won't be able to write to the card due to Android security restrictions (though ES File Manager did have a workround for some brands), but it would be interesting to see if it can read it.
Also, do you have the option in Settings to format the card in the phone? I know you've tried erasing it and the fact that anything's happening at all suggests that the OS recognises it. You could also put a file on the card in your PC, then erase in the phone. If the file's gone, it would point to an issue between the app and the format rather than anything else.
Fat32 is always the best option for SDcards as it is universally read by all devices, however you cannot create a partition bigger than 32GB with Fat32 using normal methods.
