SanDisk Ultra 64GB Memory Card Android microSDXC

The original card sold and provided by Amazon is faultless and a guarantee of quality!
One sold by others should be checked with H2testw, only software able to verify the actual capacity of the microSD card. This alert because many Amazon reviews are references to unjustified malfunctions with respect to the original product!

Be aware that cards purchased at low prices (for non-compliant) are reprogrammed with higher capacities to then be resold more expensive. Thus buys a card stamped 64GB 64GB with a 64GB capacity identified by the phone, the PC or another but with real capacity of 7 GO for example.
Except using software such as H2testw 1.4, it is not possible to detect fraud - hence the many positive ratings when shopping these cards. ;) Some time later, defrauded users observe problems reading / writing without being able to identify the origin.

So if a card does not exceed 1 GB (for example) capacity according H2testw then ... all that will be then copied erase the previous contents. Hence the negative ratings given by some Amazon buyers, unrelated to the original product, good quality!

I have been twice .. I hope this review will educate you on the quality of SanDisk products and service provided by Amazon!