User exposed Xperia Z’s lock screen flaw

User exposed Xperia Z’s lock screen flaw

In all of its glory, it seems that Sony has overlooked a key security aspect on their current flagship. But unlike the other reported glitches on other handsets, the security bypass on the Xperia Z is fairly easy to exploit.

xperia z

The man responsible for this exposé is Scott Reed. He uploaded a short video on YouTube showing how he was able to bypass his Xperia Z’s lockscreen and access everything as if the phone was unlocked.


By inputting a set of numbers and characters on the dialer, he gained access to the phone’s internal menu. From there, he chose a certain selection and then presses the Home key which allows him to fully unlock the device.

However, this shouldn’t concern users and potential buyers too much as fix through a software update is expected to come in the coming days. In fact in recent times, Sony has released a timely firmware update for Xperia Z that addresses some of the bugs on the phone, specifically the sudden-death issue.


Update: Apparently, the Sony Xperia Z isn’t the only handset affected by this bug. According to our reader @Roiji, the security flaw is also present on his Xperia V. And just recently we tried it with the Xperia ZL and it can also be unlocked using the same method.

This article was written by Ronnie Bulaong, a special features contributor and correspondent for YugaTech. Follow him on Twitter @turonbulaong.

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7 Responses

  1. John says:

    FW update!

  2. roiji says:

    This bug is also present in my Xperia V running Android 4.1.2 build 9.1.A.0.490

  3. amang says:

    palpak. refund dapat pag ganyan.

  4. ?? says:

    Aw, this was an extremely good post. Spending some time and actual effort to make a great article… but what can I say… I put things off a lot and don’t manage to get nearly
    anything done.

  5. Quincy says:

    Everything is very open with a precise explanation of the issues.
    It was truly informative. Your site is extremely helpful.
    Thank you for sharing!

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