FYI: My iphone XS has a slightly different screw position for the one shown to have a “clip”. There is no clip for this screw on mine. Maybe a rev update because of the clip getting lost and being hard to reinstall?

My flex cable was more than lightly adhered in place. I needed to use a guitar pic or similar to help encourage adhesive to separate. I wouldn’t pull too hard like shown in pictures unless you had just the right grip on the ribbon cable so as to avoid damaging flex cable. See note above (5/31/20)

If you have flat feeler gauges (for adjusting engine valve tappet clearance, ignition points … old school) the .003” thick gauge goes right in. Work your way up in thickness until you can get the pic or supplied pry tool in. Don’t insert metal feeler gauge in too far, just enough to hold crack open. I didn’t need to use the suction cup. I used a hot/cold gel pack heated in microwave to heat edges to soften glue a bit. Made sure it wasn’t so hot I couldn’t stand it on my skin.

If you have flat feeler gauges (for adjusting engine valve tappet clearance, ignition points … old school) the .003 thick goes right in. Work your way up until you can get the pick or supplied pry tool in.

Clean out the pentalobe screw heads first so the tool goes all the way in. A small sewing needle works well to loosen any build up and then press some putty/chewing gum into the screw head and pull away quickly for a final clean out.