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Wifi/Bluetooth Issue, Can I replace logic board?

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.

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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!

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Hi there, thanks for the response. Sounds great, I am still wondering about those comments I found on other forums about not being able to replace the home button myself... They said only Apple is able to do home button replacement, is that false? Many thanks.

Only apple can do the home button replacement properly. Anyone can replace a home button on your model phone, but to have it working with touch ID, you will need apple to do it. The home button has a key in it which is the same key as the one in the secure enclave on the logic board. If the key doesn't match, you cannot use touch ID. Apple are the only ones that can change that key on the home button, so if touch ID is important to you, you can buy a logic board with an original, paired home button with it

"Apple are the only ones that can change that key on the home button"... so should I use the home button (with touch id) that I already have and just have apple change the key or i need to give apple the home button that comes with the logic board and ask them to install it?

Apple unfortunately won't change a button for you even if you ask. Only if you have never opened your phone, and the button has stopped working on its own will they pair a new one. They won't change over the key for you. Unfortunately, you will have to get a logic board which comes with touch ID if you want it to work

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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.

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Unfortunately the problem is there in the original housing as well. I was tempted to try and fix the logic board itself by taking it to somebody but there are a few other problems for instance the phone glitches when trying to go to the settings and also when you try to double tap the home button to exit out of applications.

I will try to inspect the logic board more thoroughly that’s a good idea.

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