iPhone 17 Pro intermittent Bluetooth audio disconnects
iPhone 17 Pro intermittently disconnects from every Bluetooth audio device despite exhaustive troubleshooting—what is the next diagnostic step?
I'm experiencing intermittent Bluetooth audio disconnects on my iPhone 17 Pro. The issue occurs with multiple Bluetooth audio devices (headphones and speakers), at seemingly random intervals ranging from every 15 minutes to every 4 hours.
So far I've:
- Updated to the latest version of iOS.
- Unpaired and re-paired all Bluetooth devices.
- Reset network settings (which temporarily resolved the issue for around 12 hours before it returned).
- Completely erased and set the phone up again.
- Removed the VPN profile from Settings > General > VPN & Device Management, uninstalled the associated app, and force restarted the phone.
- Worked through all troubleshooting recommended by Apple Support over the phone.
- Had Apple run remote diagnostics twice, with no faults detected.
I don't believe this is environmental interference. The same Bluetooth headphones and speaker worked flawlessly with my previous iPhone 15 in the same locations, and they continue to work normally with other devices. The only variable that has changed is the iPhone 17 Pro, and every Bluetooth audio device I use exhibits the same behaviour with this phone.
Apple Support weren't able to identify the cause after exhausting their troubleshooting, and Sky Mobile (who I have the contract with) have offered to send the handset away for repair. My concern is that because the fault is intermittent, it may not occur during testing and the device could simply be returned as "no fault found."
Given that the issue persists after a full reset and all recommended troubleshooting, what is the appropriate next step? Is this the sort of intermittent behaviour that would justify a hardware replacement despite clean diagnostics, or are there additional diagnostic steps that Apple Stores or authorised repair centres can perform that aren't available through remote support?
iPhone 17 Pro, iOS 26