You mean we are time traveling backwards with modern technology to work out where a phone was in 2007. Pay as you go is not traceable to an individual. A lot of us use them.
Phone data was collected back in 2007.
As you said recently that you haven't followed this case from the beginning allow me to say that I did follow it closely from the day one - until now. And this was all since the very first news on Steve Huffs 's Crime blog.
How do you think otherwise the SY would be able to go through the phone calls now?
The phone data would be received from the data centres and mobile data would be collected from the masts ( towers)
This is the basics any police investigation would do and it is already been known and reported that the data collection of this sort happened in this investigation.
As the time passes the methods of analysis might be more sophisticated but the data records don't change much.
Re pay as you go phones, I am not sure if you are clever enough to understand this but for the police search in this case it doesn't really matter if the phones were pay as you go.
It would matter only if ( for example) the user was found in vicinity of PDL and 5A but his phone was bought say in Amsterdam three days prior to this phone making the fist ping to the mast in PDL and never used after that.
But even in this case police would have means to trace the phone, to say a mast at an airport with the CCTV and similar.
Nobody really gets unnoticed in our technology world unless they don't use the technology at all..
