The Sony Xperia Z Ultra (C6802) is a 6.4 inch Android smartphone that was released in several markets last month and comes with a lot of amazing features. The device is best known for its water and dust resistance as well as its use of scratch and shatterproof glass. Just like any other device though, there are some problems that pop up. One of the problems noticed so far by some owners is that the device has a defective screen.
Over at the xda forums some members have posted their experiences with the display problem of the Sony Xperia Z Ultra and even uploaded videos of it over at YouTube. What happens is that when the power button is pressed the display has no response at all although the screen backlight is lit. The Android OS is still working in the background since pressing any of the keys provides a haptic feedback, pressing the volume rocker also provides the volume up/down sounds. Even if the power button is pressed a couple of times the display still remains blank. The device will turn on randomly after 5 to 150 tries.
This issue is present on the model listed below
- C6802 (3G-only), White
- Hong Kong, unbranded
- Manufacture date: 13W29 (2013, Week 29)
- Firmware version: 14.1.B.0.471
Other owners may have a similar experience on their devices.
To solve the problem some members performed these steps which still failed to resolve the issue.
- Turn off the device then turn it back on ( the screen is still blank when it boots up)
- Pressing the hard-off button next to the SIM card tray
- Pressing and holding Power + VolUp
- Factory resetting the device
- Reflashing the latest firmware using PC Companion or SUS.
One other minor problem owners are facing is that if they try to wake up the device green lines appear on the screen.
Some owners say that updating the device to the latest build version 14.1.B.0.475 solves the issue however those who have updated their devices say that the issue still persists. Hopefully Sony Mobile will come up with a permanent fix to this issue soon as it looks like then number of owners complaining about this problem is growing.