Nokia mobile phone screen out the two lines, how do?

Users questions: My Nokia 3100 screen appears for no reason two lines anyway, in the upper left corner of the intersection, horizontal line is black, vertical lines are red, how to eliminate.???
Experts answer: LCD definitely bad, and if still get insurance in respect of enchant bar service center. The same is true of my Sony Ericsson K750, direct take Enchant the
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