T2 Ultra KitKat and MicroSD

[weilies]

Dear gurus,

I just get my T2 Ultra and upgraded to latest kitkat.

Am i allow to use microSD 64GB? or only support up to 32GB?

[Hampus]

Hi and welcome to the community! Since you're new please be sure that you have checked out our Discussion guidelines.

A 64 GB MicroSD-card might work, but we can only guarantee that T2 Ultra is full compatible with a MicroSD-card up to 32 GB.

[weilies]

Why there is an uncertainty from official support?
Why it "might" work?.what are the reason causing 64GB microSD fail? Whats the error?

[Thommo]

Offically it will support up to 32GB - Now the issue is the format - So anything above 32GB has to be in exFAT which won't be supported so to use a 64GB you could try exFAT or use a free program called guiformat on your Pc and force format the card to FAT32 but you will still be limited to the 4GB file size limit

[weilies]

Thankz and that make more sense for me
Even if i.upgraded to.kit kat, do I still.need the guiformat?

[Thommo]

I honestly don't know - All I can tell you with certainty is that using guiformat a 64GB card will be ok to use as long as it's in FAT32

[Sonic2000]

This is a new phone that I got. When I installed a new SanDisk Micro SD Card (32GB) into the phone it recognized it right the way. But, after a little while, the phone will announced it has been removed without un-mounted.  I tried a few times and the results were the same. However, if I plug the phone to the laptop and Sony PC Companies could see the card without any issue.

I.e. the card was physically connected.

Please advise if there were anything I could do to fix this, thanks.