The tech giant's flagship device has come under scrutiny from a security researchers who discovered the phone collects data about a user's location even if this option has been turned off for every individual app.
Brian Krebs wrote on his blog: "One of the more curious behaviours of Apple's new iPhone 11 Pro is that it intermittently seeks the user's location information even when all applications and system services on the phone are individually set to never request this data."
He contacted Apple over the issue, and although the user can avoid being tracked if the whole system was set to never share location, he saw the 'location services' icon at the top of his screen.
An engineer responded: "We do not see any actual security implications.
"It is expected behavior that the Location Services icon appears in the status bar when Location Services is enabled. The icon appears for system services that do not have a switch in Settings."
Mr. Krebs later updated his blog, with Apple explaining the behaviour is connected to a new short-range technology allowing iPhone 11 users to share files locally with other nearby phones.
A future version of iOS will allow users to disable this."