14 DAY TRIAL // Recently, Samsung’s Galaxy S III smartphone was found to be affected by a series of security issues related to its lockscreen, providing users with the possibility to perform various actions on the phone even if it was locked.
Apparently, Sony’s Xperia Z is also affected by a similar bug, one that would provide people with the possibility to bypass the phone’s lockscreen and start browsing it normally.
For that, one would simply have to go to the Emergency call screen when the phone is locked, and enter a code to access the service menu (apparently, the code is *#*#7378423#*#*).
Next, one would have to go to Service tests > NFC > NFC Diag Test and then tap the home button. After that, one would be able to browse through the device without issues, as the video above, coming from Scott Reed (via GSM Arena) shows.