"SanDisk Ultra 16 GB MicroSDHC Class 10 UHS-1 Memory Card with Adapter..."

I bought one for my daughter and one for my daughter-in-law: they inserted them into their phones and transferred their iTunes to their Galaxy S2 and S3 phones.

"SandDisk Ultra 32 GB, dead after 4 months. Update!"

I bought 4 of these units (yes, at Amazon): SanDisk Ultra 32 GB microSDHC Class 10 UHS-1 Memory Card 30MB/s with Adapter SDSDQUA-032G-U46A for 3 Samsung Galaxy SIII and one Samsung Note 2, and found that one in the SGIII has stopped working. I tried everything, in a computer, in different adapters - dead is dead. Since the other three are used by non-techno people, I am not sure if they are still working or not.When I contacted SanDisk, they gave me test instructions, which of course all failed the tests. To return, I have to pay for shipping that MUST BE tracked. This will cost around $20 for a $26 item. I ignored this, and shipped with a regular mail. I should not expect anything back, but who knows.For $6 more I have another unit, and I can tell you it will not be a SanDisk Ultra. Oh, well, the average price for the 3 remaining units will then be $34 (33% more than the purchase price).If I get a replacement, I will update this message.Update:I got an e-mail from SanDisk to advise me that they did receive the item and it is being processed. Shipping without tracking cost me $0.65 vs. $20. At least I have to give their customer service (or return department?) credit for being honest. Too bad the memory cards have problems, as SanDisk had an excellent name for providing good quality products. Maybe I should give this another 1/2 star, but there no such thing.