Hello guys ... I just ask my friend working for chip testing company once
again , apparently I am wrong to think that the UTT chip is totally
untested ...

He told me the biggest difference of these so called UTT chip and normal chip
is not the Wafer Level Funtional Testing , every packaged chip comes from
the fab will pass the wafer level probe dc parameter functional test ... He
send me a link for me to explain the difference between UTT chip and normal
chip .... And it's quite a big surprise to me because this article say that who use
these UTT chip is so called " Downgrade module manufacturers "
... And apparently the whole UTT stuff is already exist in the module
industry for a long time ... Check this page , you will be surprise to see what
it says ...

http://www.simmtester.com/page/news/...Testing&num=83