iPhone XS XR MAX power amplifier IC 170-21

iPhone XS XR MAX power amplifier IC 170-21

How to replace iphone iC chips?

*Remove the chip cleanly, with hot air.
*Clean the tracks with a soldering iron, tin and flux.
*Clean the map.
*Inspect the card under the microscope.
*If we compare to the diagram on the PhoneBoard software;We observe very clearly that we will be able to put a wire to redo this connection.
*Put on some flux.
*Take a soldering iron with tin at the end.
*Pass over the chip to smooth the balls.
*Clean.
*Put on a reballing stencil.
*Spread some soldering paste.
*Heat with hot air to form the balls.
*Extract the chip by pushing with a thin tweezers.
*Check the size of the balls.
*And we end up putting the chip back. Flow, position and solder with hot air.
*We let the phone cool, we go back and the problem is solved!