What is happening to non-volatile items when Android goes through backup & restore?

Tags:
Android
Flash memory
I have been searching more and more about Flash memory and arrived on non-volatile items; as far as my understanding goes, non-volatile items (or nv items for short) are the "unchanged" items in the system. nv items include: IMEI, PRL, MRU and etc... but what's happening when backup & restore are taking place? Will nv items be "un-touched" or overwritten? Also, where can I find more about android backup & restore process and nv items? Thank you very much for your time!

Software/Hardware used:
Android 4.2.2, jelly bean, Samsung galaxy

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  • TomLiotta
    Since they're not volatile, there is no reason to care about whether they're untouched or deleted and rewritten or overwritten.
    .
    Is there a problem? Any specific detail might be learned by studying the Android source code. But because it is open source, you need to know the specifics of a particular implementation. Each one is different in various ways. (And each version is different in each implementation.)
    .
    If you can't find an answer by looking at the source, then discussions with the Android developers community might help.
    .
    Tom
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  • withacupofcoffee
    Thank you very much for your thoughtful answer. I am not having any problem at the moment, but I am wondering as to what will happen to Non-Volatile items if factory reset were to occur.. I know some of the "untouched" items are located in /efs folder in android system, and I know things like IMEI is considered non-volatile and is located in /efs folder.. Where are the rest of non-volatile files (like PRL, ERI, etc.) located if they were to be untouched during factory reset? Thank you again for your time!
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