Hi, Thank you for your support. So, after Sony logo appears, there are some very low sounds you know. My brother noticed it first when he had it in his hand. It sounded like as you tap a few times on the back cover of the smartphone. I did not noticed first, because that is what I thought, that my brother was tapping fingers on the back side of the phone, but he said that it was the sound from the phone.
I have restarted a phone since then a few times, even after your response and the sound is something like that. All the times when I am restarting it. It is kind of a hardware sound, that is how it sounds. It is not from the software. It is a new phone for me, I bought it on Ebay and I am just worried if everything is fine with the phone.
