Can be Frankly I am surprised compatibility because LT in the Galaxy S3. 12-month-old description actually only micro SD cards "HC" used (this would "Micro SDHC" cards automatically due to the "HC" mode is limited to 32GB ), but this "Micro SD XC" with 64 GB runs really smoothly. In the art scene or on some PC magazine pages this compatibility of S3 on these "XC" card is also known and has been mentioned positively marveling.
About long-term compatibility, I can (still) do not say anything and the write speed is felt just as fast as the original 16 GB card, hand me the measurements say just what she understands, I do not belong. O)
At first I wanted ScanDisk but betellten the mixed reviews (quickly broken, does not run on S3) have driven me to the original map. The 10 Euros more are money well spent.
Therefore: Clear Kauftipp to the S3 enhance or upgrade !!