Chosen Solution
Hello, have been trying to fix my iphone for days now. Got the searching…-text in the top corner and have tried replacing cellular antenna assebly down at the bottom two times. Then it has worked for a day or two until it hasnt anymore. Today I opened my phone, took out the speaker, and put it in again. Then it worked when I pressed on the screen in the speaker-area so, pretty sure there is bad contact somewhere. Anyone know where all the antennas connection points to the chassis are so I can try and get it working again? Thankyou in advance!
The primary cellular antenna is the bottom bezel, connect to the dock flex by the 2 screws near the lightning connector, then there is a coax cable running to the lower end of the logic board. The diversity antenna is the top bezel, connect to the logic board by the bracket below the 5GHz wifi antenna(the standalone antenna on the top left). Then the signal runs through the RF cables on the back of the board to the cellular module, the lower half of the logic board. If you lost primary, the phone would still work, so I believe this could be a board issue, not just the antennas.
