Have you tried doing a soft reset on the device? Just hold the power button and it should reboot usually after about 10 seconds.First of all thanks for response.
The phone is all stock.
I tried to access recovery/fastboot mode by pressing Power&Volume- while plugging in. The only response I got was a solid red LED for about 10-20 sec and then nothing again.
To be honest I'm slowly accepting the fact that the phone is gone for good, but the data on it is really important!