The problem is definitely with the S3 and S4 and has nothing to do with the brand of card. I've had Samsung, Sandisk, Kingston and PNY Class 10 cards in 4 different SII's for 2 years and never had a problem. I recently bought two new S4's and installed the Sandisk in one and the Kingston in the other. Last week the Sandisk started to unmount. Last night all of a sudden I get a message on my S4 screen saying there isn't a SD card installed. I check the storage settings and there is no SD card recognized as being installed. I remove the card and re-install it. It's dead. I try it in my laptop and the other S4, it's stone dead...been
fried. I try the other brand cards I have and they're all recognized immediately by the phone. I got to Kingston's site and in their support forum, they acknowledge that it's a known fact that S3's, S4's and Note II's, cook memory cards. See below:
*ADVISORY* My microSD card worked in my Android 4.1 or 4.2 device but after a short time, it is no longer accessible and has locked up. How do I resolve this issue?
A problem has been identified with some microSD cards and Android 4.1 & 4.2 based devices like the Samsung Galaxy S3, Samsung Galaxy S4, and Samsung Galaxy Note II that causes the card to become unresponsive after being used for a short time. Kingston Technology has taken the necessary measures to resolve the issue but it is always a good idea to keep a BACKUP of ALL important data. If you are experiencing this problem, please contact our Technical Support department for a resolution.
Similar comments were found in Sandisk's forum, not to mention Android Central's forums and numerous other web sites. I just spoke with tech support at Samsung and they know about this but won't / don't do anything about it. Samsung
REALLY needs to resolve this
FAST before they're hit with a class action law suit. Even though the tech said to try Samsung SDHC cards, they're also known to fry. Once the memory card is cooked and no longer "recognized" by a device (given a drive letter), then no data retrieval company or data retrieval software is able to salvage what was on the card. It's gone forever! Thanks Samsung, for destroying the only wedding pictures taken at my friend's wedding (it was on a boat, so no pro photographer).
