is there any way to know when the phone was manufactured from the box? topic

buying Xperia Z2 soon .. is there any way to know when the phone was manufactured from the box?

i need to know from the box to keep it sealed so if it's old i can return it to the store or replace it
i am really worried from the issues like the gap and heat .. so what should i check in the phone to make sure it's ok before buying