Share your experience!
After upgrade to android 4 ma xperia arc became slow and instable.
The new os take to much space on internal SD.
I will downgrade to the originale OS but Pc companion don't permit it.
I will changhe my phone!
Contact your local Xperia Support for answers regarding this:
http://www.sonymobile.com/global-en/support/contact-us/
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