phone in standby

[miriamlasala]

when my phone is in standby it turns on by itself and shows SONY, than XPERIA and then a violet animation.

When I'd like to unlock it, it repets the same things that I said before.

stop, help me please 

[Uliwooly]

you can use google translate if you ever encounter a language issue.

[_alexdon_]

@uliwooly I hope the suggestion of repairing that you first made will help.

[dr1987]

Yes wen device is on standby turns automatically and displays Sony Xperia advertise kinda images than runs Bluetooth, nfc,brightness, mobiledata, wifi together.
Device was bought day before yesterday evening very same time was upgraded 4.4 n I come to notice this kinda malfunction since I started.