If that had now been the first case of a SanDisk card, I could indeed say ok; "Can sometimes happen," even if it is bitter. However, I had already a 32GB Sandisk (no Class 10 micro SD) which is passed in exactly the same way in another device after a short time. Now if you still read many homonymous reviews, I can only say: Pity Sandisk, that was it!
It appears this well to act constructive defects?
Anyway, I'll buy any of your products more memory!
Even if it give warranty, still the uneasy feeling remains a card with non-erasable personal information such as one hears and reads to send abroad. For me this is a no-go!
If it were, I would give it zero points for this product.