I have a Sony Xperia E (c1505). I did let my little brother used it for some days cause his phone was broken and he entered a pattern lock which he does not remember anymore. I cannot unlock it with adb cause the Usb debugging is not on. I cannot use my Google Account cause it only asks me a question where i was born, which my brother also dont remember what he actually wrote there. Also i cannot fastboot to hard reset the device. I would prefere to somehow unlock the pattern without loosing my data, cause of the contacts and documents i have in the device.