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iPhone7 Bluetooth issue in the car

My brand new Iphone7 seems to have bluetooth problems in my car. Everything works but the sound drops sometimes (often) when I listen to music. I didnt have this issue wiyh my 6s and IOS10. I tried to reset everything but the problem persists. The iPhone is recognized by the radio inmy Toyota, but the sound drops just as it was a radio in a tunnel.

iPhone 7, iOS 10

Posted on Sep 21, 2016 4:03 AM

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Question marked as Top-ranking reply

Posted on Jan 5, 2017 9:18 AM

I provided this to the techs weeks ago, but it seems like there was no headway. So here are the results of my trials for everyone to read:


I work in an environment where I have access to soundproof rooms. The walls are steel with padding and are about 6" thick (solid). These are "dead spots" for wireless in my building, which I surveyed and had to plan around because of the walls. I also work with deploying a lot of iOS devices, so most of my colleagues have an iPhone.


Testing environment:

I tested the area with an OptiView XG using AirMagnet Spectrum XT software. This device and software is used to measure the amount of Radio Frequency (RF) radiation in a given area to troubleshoot issues with wireless, and to help design wireless networks for large corporations. This helped me to ensure that there were no stray 2.4GHz interferers while testing, meaning that the only devices emitting 2.4GHz band RF were the "Devices" listed below (Beats Pill, Plantronics Backbeats, Braven BRV-1) and the phones.


Additionally, I tested the cars listed below in several environments with and without interferers nearby. These were less controlled, however mirrored the exact same results.


Stuttering/Skipping:

To show an example of the skipping sound that I am referring to, please take a look at this video: https://www.youtube.com/watch?v=kGHFDRVA958


Bluetooth devices tested:

  • Cars: 2013 Ford Focus, 2011 Toyota Venza, 2007 BMW 335i, 2006 VW Jetta
  • Devices: Beats Pill, Plantronics Backbeats, Braven BRV-1


iPhones tested:

  • iPhone 6s - No problems
  • iPhone 6s Plus - No problems
  • iPhone 7 Plus (AT&T, A1784) - Stuttering
  • iPhone 7 Plus (AT&T, A1784) - Stuttering
  • iPhone 7 Plus (AT&T, A1784) - Stuttering
  • iPhone 7 Plus (T-Mobile, A1784) - Stuttering
  • iPhone 7 Plus (Sprint, A1661) - No problems
  • iPhone 7 (Verizon, A1660) - No problems
  • iPhone 7 Plus (Verizon, A1661) - No problems
  • iPhone 7 Plus (Verizon, A1661) - No problems
  • There were two other GSM iPhone 7 Pluses that I trialed, but I don't have the model numbers in front of me to list to provide exact details. Both had issues.


As you can see, the issues are localized to the GSM models using the new Intel modems. This further solidifies the belief that there is an existing hardware issue and not a problem with software, interference, or other manufacturer's devices. I'm not sure what else I can do to troubleshoot with the Apple reps, but after spending upwards of $5000 with Apple in 2016, I can't help but to feel neglected.

707 replies

Nov 3, 2016 12:42 PM in response to McReza

No not the chip. This problem happened on my iPhone 6s Plus as well when I upgraded to 10 when it was working fine on iOS 9. Since the problem goes away by disabling LTE, my theory is that they changed how LTE works in the new iOS in software in that it interferes with Bluetooth.


Try disabling LTE when in your car. See if that eliminates the problem until they fix this.

Nov 3, 2016 4:33 PM in response to brunowajskop

Everyone is seems to have this problem, but I don't see a fix. I have an iPhone 7+ and iOS 10.1.1. I recently had iPhone 6 and didn't have any problems playing music from my iphone in my car. I can play music in my house using other bluetooth speakers just fine with my iPhone. So like everyone, else it is frustrating that I can't play the same music in my car without it skipping. I am assuming, Apple will have to come up with a new update fixing this issue.

Nov 4, 2016 7:44 AM in response to MaxximMax

That's me - I've had a support case open with them since September 21st regarding this issue.


I spoke with a senior tech at Apple on the 22nd and installed a service profile onto my device and logged until the 23rd, specifically noting each time I had an issue (to the minute). I sent them the logs, and they got back to me on the 27th because they were unable to open the multi-part archive I provided them with (it was 4GB of logs).


I sent them the same logs again via a Google drive link on the 27th. No response from them for a while, so I requested an update on October 6th, only to be told that there was no way to know when the engineers would update the case.


I followed up again on November 1st and am still awaiting a response from the tech assigned to my case.


It's extremely frustrating to just be ignored like this.

Nov 4, 2016 8:21 AM in response to RobbStumpf

The issue is very apparent and reproducible with any phone! I can't believe that they are still investigating the issue! Apple claims that iOS 10.1.1 "Improves Bluetooth connectivity with 3rd party accessories" as the first fix in their list" but multiple users in this thread confirmed that the issue is still present in iOS 10.1.1.


I turned off LTE today to see whether it has something to do with LTE or not and drove for about 20 min. and did not experience the issue. I need to drive longer without LTE to confirm whether it is related to Bluetooth-LTE interference or not.

iPhone7 Bluetooth issue in the car

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