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Can I write some data to an SD card on Windows Phone 8

I checked the SDK document for Windows Phone 8 and found that we can read data from the SD card, but we can’t write anything, do I understand correctly?

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You can read-only access specified files on SD cards using the ExternalStorage API and ID_CAP_REMOVABLE_STORAGE, but you cannot write to this storage.
http://msdn.microsoft.com/en-us/library/windowsphone/develop/jj720573(v=vs.105).aspx

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Third-party applications cannot directly write anything outside the IsolStorage application.

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UC browser can export files to SD card. I think that they have access to an extended API that is not accessible to ordinary developers, I tried to contact them about how they did it, but so far I have no answer. So, yes, it is possible, but a smart hack or method implemented by them is not publicly available. Here is more information, http://forums.wpcentral.com/windows-phone-8/266236-developers-given-access-sd-card.html

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