I always found a better way was to find the tiniest allen wrench you can that will partially fit into the stripped out screw hole, preferably one that is disposable, and then use the tiniest bit of superglue you can to glue it into the hole. Let it dry for as long as possible, then twist and remove.
This won’t work in larger, high-torque situations, like if you shear a head bolt in a car engine, but it works perfectly for laptops and phones and such.
