loose connections in cell phones

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my nokia 7210 (color screen) is showing wierd color bands (i.e. the
battery indicator, each block would be a different color, one red, the
next green etc) .

sometimes it just displays a blue screen when i turn it on. but the
cell phone is still working and it receives calls fine.

i had a look under the cover and from my limited understanding the
problem appears to be a loose connection around the screen? how could i
fix this feasibly ?

thanks

 

[Inty&Go]

my nokia 7210 (color screen) is showing wierd color bands (i.e. the
battery indicator, each block would be a different color, one red, the
next green etc) .

sometimes it just displays a blue screen when i turn it on. but the
cell phone is still working and it receives calls fine.

i had a look under the cover and from my limited understanding the
problem appears to be a loose connection around the screen? how could i
fix this feasibly ?

scrub softly the contacts with a paper rubber