This solution is very usefull for sprint 7700 dual sim phone repair.
This is sprint 7700 dual sim charging solution.View the picture and work
step by step.
How to do this work : If
You see your phone is not charging then first check your charger next
check phone's charging port.If they are ok but problem still then check
this charging ways.If charging ways is ok but problem same then check
and change red mark parts.This solution also work,Charging showing but
charge not store.
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