if there is any water damages or rust clean these parts with electronics cleaner and leave it to dry for a few mints under electrical bulb.
if with only service problem can not be solved then you can replace ic that is inline with red line.you may can check also some more components near this area.
for more detail and new tips and tricks about cellphone service problem keep visiting this page we will update cellphone service diagrams timely with new cellphone diagrams.some related post are also given bellow you can read them also for more information about cellphone.
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