Chosen Solution
Hey i was hoping to get some advice, I accidentally knocked off the C0552 capacitor on an iPhone 6s when i tried unplugging a connector.. it was so small! I wasnt originally attempting a board repair until this fell off so im worried that it might be something critical. From what i see in the schematic its part of the “NORTH DC CURRENT BLOCKING CAPS” Screenshot: https://imgur.com/a/XIjDRMH
Thanks I appreciate all the help i can get, I’m interested to seeing what its function on the board is too :)
This capacitor is pretty easy to source; you can find them at DigiKey or Mouser. Soldering them is another story however as they are quite tiny. That said, I don’t think it needs to be replaced. These four caps are there to filter out any noise on the the NORTH_AC_GND_SCREW line which is where the antenna interconnect resides. These caps are designed in to optimize performance when manufacturing tens of millions of devices. I would try to simply rebuild the device as is and see how it performs, If you don’t see a difference, then don’t bother with it.
Here’s board view for both sides of that cap. Thankfully it’s not located in a terribly crowded spot on the board, but still very, very tiny. Unless you have much experience with micro soldering I’d say either get it repaired by a professional board level repair shop, or replace the logic board. the phone will likely function just fine without this capacitor (as @techstuff mentioned) but it is probably safer for the phone to replace it.
