I asked a question in the Sony forum, but I did not get a clear answer. My Xperia J has only 380MB of RAM, and in white paper is written that the device has 512MB of RAM. What other components utilize the remaining memory?
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1This question appears to be off-topic because it is not about software, programming or so. – philant Sep 24 '13 at 12:29
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Sony forum support agent send me here with this question. – QkiZ Sep 24 '13 at 14:33
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RAM usage is mentioned in this article on the difference between Gingerbread and ICS.
"Out of our 512MB RAM, about a third is used for functions that require a dedicated memory slot to operate fast enough. For example, this is the case for certain multimedia functions."
- You can not free this memory
Best regards, Carl Johansson

Carl Johansson
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Thanks for this article. I do not want to free this memory. I'm writing an article about the Xperia J which is to be very technical and I need information of high level of expertise. – QkiZ Sep 25 '13 at 19:39