Z5 Compact screen flickers during unlock

[cosher]

Hi all.

Have an unpleasant experience of using my new Z5 Compact. During unlocking the screen is flickering (attached img). After unlocking everything works fine. Have someone seen this?
This is hardware or software issue?
Thanks ahead.

[Christofer]

Hi @cosher,

It's hard to say what the cause could be but if it only happens when unlocking the phone it could be software related. I'd suggest that you perform a software repair using PC Companion which will completely reinstall the software in your phone.

[cosher]

Thanks for suggestion, but I already tried factory reset and it did not help.
By the way, Android version is the last available OTA 6.0 and I had the same issue on the previous version.

[Christofer]

In that case I'm afraid it seems that your phone needs to be examined further at an authorised service center. Your Local support team can provide information on where to find an authorised service center near you and how to proceed if need be.

[cosher]

It is not really bothers me until I see it only during unlocking. I hope in future some software update will arrive and it will disappear.

[Christofer]

I understand. If you should notice it getting worse I suggest that you get your phone examined at an authorised service center.

[Samuel2213]

I can confirm that this is an ongoing issue. I'm onto my second Xperia Z5C now because the first had this issue to the point where it was becoming unusable and the bright green distortion was being burnt into the screen, and the second one is starting to develop the issue.

It seems to happen after being left off for a few minutes. Makes me thing it might be an issue with the graphics drivers being unable to load correctly.

It has actually happened where it doesnt fix itself, and stays distorted, forcing me to force-restart it. This problem has cost me shifts at work and several important phone calls.

[Samuel2213]

This is the second phone I've gone through now in the past few months. First one had this issue right out of the door, and this phone started having it about a month ago (its ~2.5 months old now), and I'm most likely going to have to go through warrenty for another replacement.

The issue is caused by the phone being on sleep for 5+ mins, and the only way to fix it is to reboot, sometimes multiple times. Its kept in a protective case at any given time, has had no water on it, and the most intensive thing its ever done is play Youtube videos.

Is this a common factory defect or am I just plagued with bad luck?

[Christofer]

@Samuel2213 Sorry for the late reply and I'm very sorry to hear about your phone.

As far as I know this is not something that is common so it seems you've had some very bad luck in this case.

[Samuel2213]

@Christofer Yeah probably, it doesnt help that I'm up to 5 repair orders, with 3 of them being bounce repairs and one being a complete phone replaced.

Whoever at Telstra that thinks that he can repair a hardware problem by reformatting it, then reformatting again when the repair order gets sent back because it didnt work needs some serious retraining.