Released on September 19, 2014, this 5.5" screen iPhone is the larger version of the iPhone 6.

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No Sim after logic board swap

So I just swapped th logic board of a 6 plus and now it either says No Sim. Or when I restart it with a sim it will just keep saying Searching. I'll take the sim out and it'll say the same thing and I'll put it back and it's the same. Already tried different sims, different trays, blowing out sim slot. Before moving the logic board it was fine. I know the new housing is fine too because it was working for the other phone. What could it be?

Answered! View the answer I have this problem too

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The best way to test it is to put it back in the original housing to see if symptom clears up or remains. if it clears up and works, maybe new housing has an issue...are you using same charging port with same GSM antenna or a new one?

If the board "Flexed a bit" during transfer, maybe a cracked solder joint happened on Baseband IC.

Retrace your steps to where it was working is my first suggestion to confirm it still works.

Does *#06# give you IMEI in new housing? (Just thinking Baseband reball and U1 & V1 jumper may be needed).

Get back to us with your results... Best of luck!

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Bad logic board, that's it.

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No it's good. I was using it before. I moved it because the housing was beat up.


You broke it during migration then, or it is damaged somehow when the case is beat up and when you try to migrate it, it finally dies.

Logic board is exteremely delicate electronics, it's super easy to mess up.


I've done it many time. Do you have an idea where this one could have gone wrong.


Some iPhone 6 boards don't take bending too well, for example PCBs manufactured by UMT. Maybe the case was somehow bent and stressed the board but didn't kill it. When you take it out, the straightening actually finally killed it.

Or you just happened to have unknowingly knocked something off the board.


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jack sullenger will be eternally grateful.
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