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Current version by TerraD,

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I too had the problem, that the thread (tutorial ' Display Assembly ', Step 13, yellow screw) separated from the logic board. Actually I think it was broken off when I opend the phone (crshed display due to droping). You can see this here: [positionposition and remoedremoved screw and thread|160694thread:[image|160694]
I too had the problem, that the thread (tutorial ' Display Assembly ', Step 13, yellow screw) separated from the logic board. Actually I think it was broken off when I opend the phone (crshed display due to droping). You can see this here: [positionposition and remoedremoved screw and thread|160694thread:[image|160694]
I decided to assemble the phone without this screw and thread. Up to now I did not have any abnormalities (well, I had the [http://www.ifixit.com/Answers/View/55630/iPhone+4+proximity+sensor+not+working+after+replacing+BLACK+GSM|proximity sensor not working] problem, but I think this is not related).
As an electrical engineer I consider it at least as very uncommon to use a shield or antenna as a conductor at the same time. Reasons against are: 1) bad testability of the board while not integrated into handy 2) the use of a screw is not as reliable as a soldered connection. But of course there remains a chance they do it anyhow, as space is really crucial inside such a device!
If the shield really has a jumper function at the same time: What kind of malfunction have you found in devices without this screw?

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Original post by TerraD,

Text:

I too had the problem, that the thread (tutorial ' Display Assembly ', Step 13, yellow screw) separated from the logic board. Actually I think it was broken off when I opend the phone (crshed display due to droping). You can see this here: [position and remoed screw and thread|160694]

I decided to assemble the phone without this screw and thread. Up to now I did not have any abnormalities (well, I had the [http://www.ifixit.com/Answers/View/55630/iPhone+4+proximity+sensor+not+working+after+replacing+BLACK+GSM|proximity sensor not working] problem, but I think this is not related).

As an electrical engineer I consider it at least as very uncommon to use a shield or antenna as a conductor at the same time. Reasons against are: 1) bad testability of the board while not integrated into handy 2) the use of a screw is not as reliable as a soldered connection. But of course there remains a chance they do it anyhow, as space is really crucial inside such a device!

If the shield really has a jumper function at the same time: What kind of malfunction have you found in devices without this screw?

Status:

open