We Fix All Samsung Galaxy S, Note, A & J Series Phones.
Samsung give 1 Year of Warranty for all Samsung phones.
Yes it does, but it depends where its getting fixed. The tech should know how to seal it.
Samsung Uses the OLED screen, which are more durable, crystal clear and sharp display. And it doesn't have after market screen, that is the reason the prices are little high compare to other screen.
Its look like there is moister in the charging area, some time we don't even notice and place our device at liquid surface area.