Get well a MONTAGSTEILCHEN!

After I take this memory card since now more than a month with my smartphone, I had to reformat it 3 times completely, since the phone had the memory card appears to be damaged. Previously, I had a smaller memory card (2GB), the same brand, not even once such a problem.
Pretty annoying formatting as this lost basic settings, such as Weckerbenachrichtigungston or contact pictures.

My guess says, however, that it is merely a bad exception.
About a return I have not thought, because the Probdukt was sent in a letter delivery without the original packaging ...