iPhone 17 Pro - Bluetooth & Wi-Fi Connection Issues

Do you have a 3rd party VPN installed, even if you are not using it? If so, delete the VPN profile in Settings/General/VPN & Device Management/VPN, then restart your device. Don't just turn it off; delete the profile. Updates sometimes need to have VPN to be removed and reinstalled. If that fixes it, you can try reinstalling VPN, but probably shouldn't.

"iPhone 17 Pro - Bluetooth & Wi-Fi Connection Issues: I purchased an iPhone 17 Pro in October 2025. Since purchasing, the Bluetooth and Wi-Fi functionality regularly turns itself off and on, disconnecting from networks and/or devices. If I turn Wi-Fi off, the Bluetooth becomes more stable. If I turn Bluetooth off, the Wi-Fi becomes near constant stable. It's as if the N1 chip can't cope with both on."

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Clear the Caches:

Caches are created for remembrance of application use, and ease of access. These gather as time proceeds,a dn clearing them might just fix a few things, such as performance. Use my User Tip: How to Clear "System Data" in your iPhone's Storage: - Apple Community

travorama wrote:

Thanks for that. I did take it into an Apple Store Genius Bar on 23/12. They advised the same. I spent the entire day on the 24th completely erasing all content and re-installing my iPhone from the iCloud back-up followed by lots of media syncing. Unfortunately, the issue still occurs. Wi-Fi and more commonly Bluetooth drop out regularly.

What about any apps like Anti-Virus or cleaner apps? Anti-Virus apps are tied to VPNs themselves and should be removed if you have one. They're also completely not needed.

travorama wrote:

Nope, no anti-virus or cleaner apps ever installed.

I wish anyone here could tell you why this is happening, but from our living rooms on this user to user only forum, it's not possible for us to diagnose. Personally, we have iPhone 17 Pro and Pro Max, iPad Pro M5, iPad Air M3 all new and none have any issues with Wifi or Bluetooth connections.

Probably a difficult thing to suggest, but since you restored the phone from an iCloud backup and it didn't help, the next thing I'd do is restore the phone back to new and set it up manually, NOT from backup and just sign in to the phone with your Apple ID, but not add anything back and see if the problem persists. If the problem goes away, there may have been something in your backup which doesn't play well with the new phone. Once you determine it runs with the stability it should, you can then download the apps from the App Store and turn on iCloud syncing options for things like photos, messages, etc.

travorama wrote:

Confirming I have reset the phone to factory settings and have setup the phone from scratch not restoring from any previous back-up. Unfortunately, the Bluetooth functionality dropping out, more commonly in busy environments still happens. Again, it's the entire Bluetooth functionality (ie, the Bluetooth icon goes white and devices drop out, then after 10-50 seconds, the Bluetooth icon turns blue and starts to reconnect to known devices).

I've now annoyingly got a fairly blank phone (no mail setup, no additional apps setup), where Bluetooth continues to turn itself off/on intermittently. It seems that if the 'Apple Diagnostics' test comes up with 'no issues' then it's up to the customer to either live with the fault and/or troubleshoot the matter themselves.

Are you unable to demonstrate this behavior to Apple at the Apple Store? I have no less than 8 Bluetooth devices connected to my iPhone 17 Pro Max and not once has there been any dropout at any time. It would seem your phone should be replaced, but I think you'd need to be able to demonstrate the issue to Apple.

“Thanks for that. I did take it into an Apple Store Genius Bar on 23/12. They advised the same. I spent the entire day on the 24th completely erasing all content and re-installing my iPhone from the iCloud back-up followed by lots of media syncing. Unfortunately, the issue still occurs. Wi-Fi and more commonly Bluetooth drop out regularly.”

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Did Apple Advise to Restore from iCloud?

As for clearing System Data —you backup the iPhone to a computer and then restore instantly from that backup —iCloud plays no part the clearing System Data: Use my User Tip: How to Clear "System Data" in your iPhone's Storage: - Apple Community

The Grinch stole my System Data from my iPhone —I guess he’s not a mean one, after all.

Does this happen in specific locations, or everywhere? Could it be a result of interference:Resolve Wi-Fi and Bluetooth issues caused by wireless interference - Apple Support