Summary: In order to RMA the card one needs to contact SD customer service first and wait for approval.
Pros: it was "just" 40 bucks.
Cons: Bought on black friday sale, but used the card just a few times. Inserted it into my Note 2 and the card died. tried to format it using the Disk manager and under Linux. Even tried to use a low format tool. No success
Summary: I read there is possibly a defect with the cards manufactured before a certain date. I wonder if my card is part of that batch. I'm debating if I should RMA it and/or contact SanDisk support.
Pros: Newegg Shipped it quick.
Cons: I got this card for my new Galaxy S4 and I've been getting nothing but problems. The 64gb card keeps ejecting and re-mounting, allot of times midway through songs I play on the card. I even reformatted the card with phone and it was good for maybe a week but the issue keeps persisting.
Pros: Card was working fine for the first week. Speeds where decent but I did not do full testing to confirm advertised speeds.
Cons: Card started to load slowly after about a week, It started to have a read error. Than the card would become corrupt and I would need to format it. I have formatted it 4 times so far and this time it cannot format it. It just freezes than crashes and says "windows cannot format drive" So now I'm stuck with a dead card.
NOT COMPATIBLE WITH BLACKBERRY DEVICES RUNNING 7.0 OR LESS
Nathan "Nathan", Amazon
28 October 2012
Summary: This is no reflection on the card -- aside from the fact that it is very unfortunate that SanDisk is STILL the only company that has a 64gb micro card on the market AND that it only has a sdXC version but not a sdHc version -- but just wanted to note for others out there that are wondering if the SanDisk 64 gb microsdxc card is compatible with Blackberry devices currently on the market (i.e. OS 7 and less): The current fleet of Blackberry's will not work with this card.
Summary: This review pertains to product advertising. The Sandisk website lists SDSDQUA-064G-A11A as a Class 10 card, which is new from Sandisk and replaces the Class 6 version of the card. If SDSDQUA-064G-A11A is the Class 10 version according to Sandisk, wouldn't the model listed here (SDSDQUA-064G-U46A) be the Class 6 version?