One of the advantages that some Android and Windows 10 Mobile smartphones have over the iPhone is the compatibility with SD cards. This means that in addition to native storage, users will have the option of adding more storage via SD cards if they need it, which will come in handy for storing movies, music, photos, and more.

In some cases, apps can also be installed on these SD cards, thus freeing up native storage in the process. However not all SD cards were created equal and because of that, the SD Association has announced that there will soon be a new classification system for SD cards to help identify how well cards will handle app performance.

The first class announced comes in the form of A1, which has been defined as SD cards that can perform a sustained sequential performance of 10 MB per second, as well as 1,500 random read input/out operations, and 500 random write IOPs. As it stands, UHS Speed Class 1 and Speed Class 10 cards already meet those specifications, but basically this classification is meant to help clear things up for users.

The SD Association also notes that we can expect more classes to come out in the future, but if you are shopping about for SD cards in the near future, the A1 classification could be worth keeping an eye out for.

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