[ansible]

It depends. It may work with just a reflow, if the board is reinforced so that it is stiffer and doesn't put stress on the balls.

If you take off the chip, you could theoretically re-ball it and put the same one back on, but that requires even more specialized equipment.

I was amused to see in that interview with the Laura the repair person, the new chip was put on slightly crooked. It will still likely work, but isn't optimal.

I don't tend to face these sorts of problems myself, because my phone is always in a case in a holster, so that it doesn't get bent or whatever under normal conditions.