ya im sure it does not need a class 10 but the sandisk 64 gb was available only in class 10 i was using a 32gb class 4 in my s3 before i bought the 64gb and it worked great. Im guessing exfat and exfat32 are not the same. Im waiting for the auto run of TB in about 1hr 45 mins and see if it fails again then will format it again in exfat32 currently its in exfat.
Running Omega Rom V10 for GT-I9500
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