Installing iPhone 4 Speaker Enclosure - Page 3

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Use a small flathead screwdriver to remove the 4.8 mm standoff near the headphone jack.
When reassembling the device, this standoff sets the height of the Wi-Fi shield removed in step 13. If not torqued down, the shield will be above the plane of the frame and the back will not slide into place in step 2. The shield should be flush with the headphone jack.
When reassembling the motherboard, ensure that its edge sits under the circled standoff, otherwise the screws will not fit.
When reassembling ensure that the small rubber spacer attached to the top of the motherboard is in place. Without this part the motherboard could damage the ribbon cables around it.

Carefully remove the logic board from the iPhone, minding any cables that may get caught.
- Be careful not to damage the small gold prong (marked in red, near the top) as it's very fragile.

Remove the single 2.4 mm Phillips screw securing the speaker enclosure to the side of the inner frame.

Remove the speaker enclosure from the iPhone.
Before re-fastening the speaker enclosure to the inner frame, be sure the four small EMI fingers rest below the lip of the LCD frame.
Before reassembly, be sure to clean all metal-to-metal contact points between the EMI fingers and the internal frame as well as the brass screw mounting point with a de-greaser such as Windex. The oils on your fingers have the potential to cause wireless interference issues.

Starting near the cellular antenna cable, use the edge of a plastic opening tool to peel the antenna off the speaker enclosure. Make sure you insert the plastic opening tool under the plastic the antenna is mounted on, not the metal plate.
Continue peeling the cellular antenna off the speaker enclosure, being careful not to rip the gold bracket attached to one of its edges.
Remove the cellular antenna.
When installing a new cellular antenna, be sure to slide the gold bracket over the ear molded into the speaker enclosure before sticking the antenna down.