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Non-Total iPhone Backup
Authored by: xcgr on Feb 17, '11 05:43:04PM

Music doesn't need backing up because you're already syncing it from your Mac to your phone. And if you download new music or podcasts on to your phone, iTunes copies the new music back to your Mac the next time that you sync.

Caches are temporary files for use by apps and the system.†By definition, they do not need to be backed up. The phone will regenerate the caches as needed.†

It's possible for a poorly written 3rd party app to store important data in its cache. Then iTunes wouldn't back it up, and this hint would be the only way to get a real backup. Personally, I would ditch the app for something less buggy.



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Non-Total iPhone Backup
Authored by: FlaSheridn on Feb 18, '11 07:45:51PM

> Music doesn't need backing up becauseÖ

I was not correcting the claim that iSync backed up what needs backing up, but that it backs up everything, which it does not. Whether a selective backup programís idea of what ought to be backed up and restored, matches a given userís needs, is a question with a long and interesting history, but Iím afraid that much of my evidence is covered by non-disclosure agreements.


> It's possible for a poorly written 3rd party app to store important data
> in its cache. Ö Personally, I would ditch the app for something less buggy.

The sporadic reports I mentioned (but havenít confirmed independently) were not about data in the cache, but in the parts of the file structure which are documented as being backed up. As I said, I have not confirmed these reports, but Iím surprised that you know that the app is buggy.



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