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iPhone 13 Pro and Bluetooth Issues

Ok, folks... I'm wondering if others have been dealing with this very same problem. My wife and I have iPhone 13 Pro phones and we BOTH connect to our car's infotainment systems (mine being CarPlay, my wife's is an older Nissan Rogue without CarPlay) and we get one of two things happening while driving throughout the city of Memphis. This happens very consistently in the same spots in the city every single day, so it's not exactly a software glitch.


Here's what happens. While listening to music or podcasts during our daily commute, our phones will glitch and either the audio stops playing or it drops quality to a mono signal that sounds like an old analog telephone. When the audio changes suddenly, you have to press play to pause it for a few seconds and press play to continue at full quality. If the audio stops, you just press play to continue. I've seen the exact behavior in FIVE completely different cars with very different infotainment or stereo systems in vehicles ranging from 2010 to 2022.


THIS is so freaking annoying and Apple has COMPLETELY ignored it for the past TWO YEARS that I've been talking with them about it. I have a media engineering background and my experience tells me that the iPhone 13 Pro (and probably the iPhone 13 series) has a serious shielding issue. Meaning, Apple (FoxConn) used inferior materials to shield out noise and additional frequencies that can interrupt the phone's Bluetooth capabilities. Yes, CarPlay in some cars that have wireless CarPlay use both wired and Bluetooth at the same time to run CarPlay. Otherwise, I wouldn't have any issues in my 2022 Chevrolet Blazer with this issue. In another vehicle I own, I tried disabling Bluetooth and connected the iPhone using it's headphone adapter to an AUX jack in the car. It never dropped out once while driving on my daily commute. This leads me to believe its a Bluetooth issue with these iPhones. As I said above, my wife and I BOTH have iPhone 13 Pros and it happens on both phones in 5 different cars using Bluetooth or CarPlay.

iPhone 13 Pro

Posted on Mar 26, 2024 7:57 AM

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Posted on Mar 27, 2024 1:27 PM

Thanks for your response. All of these suggestions are great but I'm in a moving vehicle with only my iPhone that's active for my daily commute. It does seem to happen less when my wife is with me with her iPhone but the fact remains that the iPhone 13 Pro (and I'd bet the same with the rest of the iPhone 13 series) has this same issue in a moving vehicle where you can't control the amount of interference. I've already reset the phones multiple times by resetting the Network Settings and Reset Phone and it still doesn't make any difference. This is how I concluded that it's the phone's shielding or lack of shielding resulting in interference issues. I'm sure that software could help reduce some of this but Apple won't acknowledge it still.

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Mar 27, 2024 1:27 PM in response to tvman11

Thanks for your response. All of these suggestions are great but I'm in a moving vehicle with only my iPhone that's active for my daily commute. It does seem to happen less when my wife is with me with her iPhone but the fact remains that the iPhone 13 Pro (and I'd bet the same with the rest of the iPhone 13 series) has this same issue in a moving vehicle where you can't control the amount of interference. I've already reset the phones multiple times by resetting the Network Settings and Reset Phone and it still doesn't make any difference. This is how I concluded that it's the phone's shielding or lack of shielding resulting in interference issues. I'm sure that software could help reduce some of this but Apple won't acknowledge it still.

Jun 4, 2024 4:00 AM in response to tvman11

The apple support comments are the equivalent of telling me to turn it off and on, or maybe smack it a few times… literally useless. They aren’t understanding that there is some location-based signal that is interrupting bluetooth for a few seconds at a time at all of these various locations. It feels geofences to me… as if there is a bubble around my house and other points of interest. I wonder if apple maps has anything to do with it, but I truly don’t know. This happens to me within the first 1/2 mile of my house and then again when I am arriving at a destination that I visit frequently.

Mar 26, 2024 9:00 AM in response to tvman11

Bluetooth interference can potentially cause connectivity issues due to the disruption of the wireless communication between devices. Bluetooth operates in the 2.4 GHz frequency range, which is also used by various other devices such as Wi-Fi routers, microwaves, cordless phones, and even some baby monitors. When multiple devices are operating in close proximity and using the same frequency band, interference can occur.


Here's how Bluetooth interference can impact connectivity:


  1. Audio Streaming Interruptions: When you're streaming music via Apple Music or using CarPlay audio content, Bluetooth interference can disrupt the connection between your device (such as an iPhone) and the Bluetooth speaker or headphones. This interference can result in the audio stuttering, dropping out momentarily, or experiencing poor sound quality.
  2. Bluetooth devices transmit data in packets. Interference can cause some of these packets to be lost or corrupted during transmission. As a result, the receiving device may have trouble decoding the audio or Siri commands correctly, leading to stuttering or delayed responses.
  3. Bluetooth signals can be weakened by interference from other devices operating on the same frequency band. If the signal strength drops significantly, it can affect the stability of the connection between your device and the Bluetooth accessory. This can result in intermittent stuttering as the connection struggles to maintain a consistent data flow.
  4. Bluetooth uses different channels within the 2.4 GHz frequency range to establish connections. When there are many Bluetooth devices in close proximity, multiple connections can create congestion on the available channels. This congestion can cause interference, leading to degraded performance for Apple Music streaming Podcast or Apple CarPlay.


To mitigate Bluetooth interference issues and reduce stuttering:


  1. Minimize the number of active Bluetooth devices in close proximity to each other. Switch off or move away devices that are not in use or causing interference.
  2. Increase the distance between your Bluetooth devices (e.g., your iPhone and Bluetooth speaker/headphones) to reduce the impact of interference.
  3. Keep your devices' firmware up to date, including your iPhone and any Bluetooth accessories. Manufacturers often release firmware updates that can improve the performance and stability of Bluetooth connections.
  4. Objects like walls, furniture, or large metal surfaces can obstruct Bluetooth signals and contribute to interference. Ensure a clear line of sight between your devices to optimize signal strength.
  5. Some Bluetooth devices allow you to manually switch to different channels within the 2.4 GHz range. Check the user manual or settings of your Bluetooth accessory to see if you can change channels to find a less congested one.
  6. If your Wi-Fi router supports it, consider using the 5 GHz frequency band for Wi-Fi connections instead of 2.4 GHz. This can reduce potential interference between Bluetooth and Wi-Fi signals.


By implementing these steps, you can help minimize Bluetooth interference and improve the overall performance of CarPlay Audio.



iPhone 13 Pro and Bluetooth Issues

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