Do I lose the data on my phone when updating from iOS 7 beta to public release?

July 5, 2013
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I am looking to buy a developers account for Apples Developers Program. However, I currently only have one iOS device to test on.

My question is, if I upgrade this device to iOS 7 beta, and keep updating as the betas progress, when the public release version is released, do I lose the data backed up on the device?

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