If you have already tried the antenna fix, the Software fix, the charging port fix, housing swap, etc...keep reading...
Over the last year, I have had many of these come across my bench and the majority 8 of 10 (Guestimate) have been the Baseband IC. Dial *#06# you should see the IMEI, IF Not, then this just may work for you.
You will also want to look for Modem Firmware version in settings to see if it is listed, if not, then I would look at U_PMICRF Baseband power management IC.
also, if imei is there,modem firmware is there, it could be one of these 3: U_ASM_RF antenna switch module ic chip, WTR1625L Transceiver chip IC U_WTR_RF, or Receiver IC U_WFR_RF WFR1620
I suggest (If you have the experience and tools) that you remove the Logic board and the shield next to Sim Tray off. (The one closest to the battery connection, not near LCD Connectors).
Then you have a few options:
1. A temp fix that does work as a bandaid fix, reflow the baseband IC somewhere near 340C to 360C
2. Remove the baseband IC and reball it, also running short jumpers on the U1 and V1 pads (Not a permanent fix but much better than the reflow)
3. Same as number 2 but run long jumpers from the U1 and V1 pads. This requires removing the Sim Tray to get to one of the destination points and pretty difficult to reuse the tray as there is alot of plastic in it. the other jumper goes to the back side of the board.
Here is a video referred to me by @refectio of Chris long doing this repair:
https://youtu.be/1o49Ya-jEAA?t=3h55m00s
This has worked very well for me to fix this issue using the "Long Jumper"
As for the question on the Iphone 7 plus chip, please tell me which one?
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25 Kommentare
Clapping the backside several times very hard on a pillow on a desk worked for me - unbelievable xD - thank to this cool forum
von Christian
I had the 'searching' message on my iPhone. It's a sign the antenna is broken.
I took it to Apple and they told me it can't be fixed - I needed to buy a new phone. I stopped in a store that repairs phones, and they replaced the antenna in an hour for $69.
von lulu
How do you know it is antena, not the logic boards? It may be many things.
von Mateusz Lacki
its the wifi IC on my iphone 6plus, apple store dont repair it, they want replacement of unit for 22,000 pesos or 440$, I brought it to Geralds Repair in Greenhills Mall and WIFI IC was replaced for 3,000 pesos or 60$, and 500 pesos for battery replacement since it was damaged fr. my experimental resetting, connecting to diagnostic itunes, charging and turning 3G on even there is Grayed wifi, I found it on overheating Mode since I accidentally left it under my pillow with screen warning, then turns off and wont charge decided for apple consultation and repair by technician
von William
I did what Christian suggested above, clapping it on the back while it’s on a pillow on a hard surface. It worked!
von Flyn Ludington
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