I am just curious how far we need to date back to find the week in which Apple started manufacturing iPhone 4...
The 4th and 5th digits of your serial number tell you the week number. For instance, mine says 22 (22nd week) - which translates to the week of May 23 - 29.
What's yours?
It may also be helpful if you could indicate whether or not you have (1) yellow screen issues and/or (2) reception issues. For mine:
Yellow screen: NO
Bad reception: NO
The 4th and 5th digits of your serial number tell you the week number. For instance, mine says 22 (22nd week) - which translates to the week of May 23 - 29.
What's yours?
It may also be helpful if you could indicate whether or not you have (1) yellow screen issues and/or (2) reception issues. For mine:
Yellow screen: NO
Bad reception: NO