First I had purchased two memory cards of this type (first generation; max. 48 MB/s) after a price reduction.
One for my daily driver smartphone BlackBerry P´9982 and the other one for my BlackBerry Passport. Some weeks after the purchases I had the first read errors on both memory cards which made it impossible to play some of my MP3 files. So I had checked the memory cards with the MS Windows checkdisk tool on my notebook. Unfortunately the check shows me that much files are corrupted so I have invalided out both memory cards to prevent data loss. That was the comeback for my older but reliable SanDisk Extreme Plus microSDXC 64 GB Memory Card.
Later on SanDisk has offered a new generation of this memory card. Because I have had never ever issues with products from Sandisk in the past I have risked to buy two memory cards again after price reduction. My two pieces of this new generation are absolutely error-free and reliable.
I listen my music collection usually as MP3 files from a microSDXC memory card in my smartphone. Therefor I had converted my collection of purchased compact discs to MP3 with highest quality. Some CDs I have saved als WAVE (.wav) file.
Photos made with my smartphone will be saved on the memory card in general, because at a sudden death of the smartphone I will lost no image.
The complete data I copy with regularity to an external hard disk drive because even a memory card can have a defect or could be ruined by a malfunction of the device.
One of these newer memory cards I use in my BlackBerry Passport and the other one in the rarely used Samsung Galaxy Note. Because I have purchased the new SanDisk Ultra Android 200 GB microSDXC for my daily driver BlackBerry P´9982 - after price reduction, needless to say.
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