I just updated my Z1 to Kitkat, and now I have experiencing a problem... When I turn on the screen, a graphical glitch appears below the soft keys, something like a missing area... with noises on it... It's not a very important problem though, but I don't like it. It only happens sometimes btw... Any idea how to fix it? I'll take and add a screenshot to the thread if it happens again.
Thanks in advance.
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