Learned this while replacing the digitizer connector on an iPad mini board:
It's a LOT easier to remove and replace SMDs that are in the way during board work, rather than trying to maneuver around them with your iron.
Also, to avoid having to replace (lego type) connectors on boards: first, press down gently on the FPC connector and rock it a little to create a little movement. Then, lift from the smaller side of the FPC connector. I was replacing quite a few board connectors before I learned this.