Chosen Solution
In short, I recently replaced the back housing on my iPhone 6S Plus. Everything works great but the Wifi and the Bluetooth. Wifi is greyed out, bluetooth just spins. I know the wifi/bluetooth antennae/cables are functional. I believe the problem is with the chip in the logic board itself. Wifi is greyed out, bluetooth just spinning.. ^This pretty much sums up my problem except my phone is the iPhone 6S plus instead of the iPhone 6 plus. I’d rather spend the money to replace the whole logic board, figure it might cost between $150-$300. My question is the following. Can I simply replace the phone’s logic board with another? I’ve heard that the home button of the phone and the logic board are linked so if I replace one I have to replace the other. I’ve also heard that only apple can replace the home button, so that would cost an additional $80 or so for them to replace the new home button and then I would replace the logic board on my own. Just wondering if this is all possible or if there are other components I need to replace as well to make this work. I’m pretty attached to this phone. The original price was over $600, so I’m willing to spend this money to get it working rather than buy a new iPhone without a headphone jack, or a used iPhone 6s plus off eBay. Any help is appreciated looking forward to hearing your response.
You can replace the logic board all you want - it is like doing a complete brain transplant; it is complete in itself. The home button is linked with the logic board, so if you want touch ID to work, you will a logic board which comes with the home button. You can buy boards which come with their respective home button, so if that is an issue for you, you can spend a bit more and get one with the button. I’m assuming you have found a logic board - they are quite hard to find. iFixit does sell them, but they are also sold on ebay and AliExpress, but with those sellers, you always need to be sure that the board works completely, and the board isn’t iCloud locked. Hope this helps!
I would also consider the other existing options: Try putting back your logic board to the original housing and see if that fixes the issue. The new housing might have some shorted parts or the housing manufacture might be not exactly up to Apple standards and creating problems on its own. Check also the logic board carefully to see if a component was teared of in the process by mistake, especially the top part, bottom side where you have the big wifi chip and relevant components. You could also try to find someone into microsoldering in your area or through a mail in service, many work on a no fix no fee basis and you might end up saving quite a bit of money.
