An update to iOS 6.1.3 is now rolling out to Apple device owners as an over-the-air update, fixing a lock-screen flaw that allowed people to access information stored on the handset without knowing the passcode.
The update states that it includes improvements and other bug fixes including "fixing a bug that could allow someone to bypass the passcode and access the iPhone app".
The issue could allow anyone who knows the trick to unlock a phone and access call logs, contacts, favourite contacts, make calls and even access photos on the device by trying to add a photo to a contact.
Apple had promised to fix the problem when it was unearthed in mid-February, but despite rolling out an update to iOS 6.1.2 to fix an email sync problem, the security flaw remained
The 6.1.3 update started rolling out to some users on Tuesday, and as well as fixing the potential security vulnerability, also improves the performance of the Maps app in Japan.
In the ZDNet office, both iPhone 5 and iPhone 4 units were able to update to the new version of the software.