Qualified service technician & low voltage hobbyist.
Small strips of good duct tape can be very useful for removing the remaining adhesive as well as any dirt left behind. Just cut narrow strips and press them firmly into the channel where the adhesive was, then peel away the tape along with any foreign material.
Heat is absolutely vital during this step. Care should be taken and you should work very slowly. A new playing card will be useful in separating the ribbon from the device, using heat periodically to soften the adhesive as you go along. The ribbon cable changes size between the connector and the button, creating a weak area that can begin to rip if stressed. Use a card flat against the frame to slowly separate the cable from the frame.
When removing the old adhesive from the edges, duct tape can be useful. Simply use small strips of duct tape and your spudger to press the tape’s adhesive side carefully into the edges of the phone’s display and slowly peel the duct tape away from the display. The duct tape should pick up the remaining adhesive and carry it away from the edges. use the tip of the spudger to gently scrape away any remaining dirt or film from the crease around the edge and repeat the action with a new strip of tape to pick up any dirt, adhesive or grime from the surface. This should save considerable time.
Care should be taken while removing the last 1.0mm screw, on the far right in the picture. This screw is screwed into another screw (or standoff) beneath the bracket. This standoff may come unscrewed and upon removing the bracket you may find the screw and standoff are still attached to the bracket. Do not lose this part if you decide to separate them , the standoff is not a normal phillips, and may require a special driver to reinstall. I used the phillips to start it back in, and relied on the screw to tighten it upon reassembly.
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