Problem, my HTC Radar unlock screen

[Perryking]

Hi, since a couple of days I have watched my HTC Radar is unlocked itself, turn on the screen and unlock it, making it very continuously. I have not installed any strange application and I think I did not install anything new recently. I have also seen the list of applications in the background and I have none.* My HTC Radar has Windows Phone 7.8 and these are the app that I have installed in case it is relevant:*

AppDeals* BBVA* Facebook* Twitter* SoundHound* Ebay* Skydrive* Skype* Whatsapp* Gooroovster* Line*

See if someone can help me find the problem, because it does so often that I can not use the phone normally and also its spend enough battery.* Thank you very much!