Yellow blob appeared on screen

[sd1cko]

Hi

As the title suggests, I have a yellow blob appeared on the top left of the screen. Its right next to where the charging port is located. 

I've noticed on a few occassions that after taking the phone from my pocket that the charging flap would be loose / open. This is strange as I don't even use this because I have an oficial wireless charging dock. 

Then one day when I was using my Z2 as a sat nav in the car, I saw this yellow blob starting to appear. I turned the device off, and back on and it was still there. I then had to go to an appointment and turned off my phone for the duration of a couple of hours, and the blob had vanished upon reboot. The blob then comes back however whenever the phone has been turned on for a matter of minutes, and seems to get worse in a warm environment (in a house) or almost vanishes if being used outside in the cold.

Is this a heat related fault or a pressure related fault?

I always have my phone in my pocket, and inside it's sony case with a screen protector on. The device has never been dropped and there isn't a single mark on it.

I love my Z2, it's by far better than any HTC or SAMSUNG that I have owned, however I'm not impressed now this has happened!!    I finally thought I'd found a brand of phone worth sticking with.

Has anyone any suggestions or similar experience? 

Many thanks

Steve

[Thommo]

Sorry to hear this but all you can do is either return your device to the place of purchase or contact Xperia care http://www.sonymobile.com/global-en/support/contact-us/

[sd1cko]

Thanks

I have contacted Xperia Care.

I bought my phone from O2 and do not wish to use their repair service, as I have been told they cannot guarantee me getting the same device back as I may just get given a refurbed replacement.

I certainly do not want someone else's damaged and repaired cast off. How would this even work with the warranty? I would have a different imei and technically someone elses Z2. It may have even been repaired from a none warranty fault for all I know. Unacceptable from O2.

[Thommo]

Not o2's fault - This is the way consumer law works if an item is older than 30 days - However the replacement or refurbished device must be of the same quality as the one you hand in for repair and will have the same warranty