How did you determine it didnt have proximity issues? I have a week 29 phone which proximity issues so I dont think that statement is accurate. Apple has said it was a software issue if I remember correctly.
i have a week 29 build and suffer from signal drop and proximity issue. although i don't think its a proximity issue more a sensitivity issue when compared to the older iphones. which factory was your phone built at?
yours does the same as my week 24. It did drop bars, so it does have the issue! same as everyone else's. it seems to have more to do with area and maybe freq?