How many people saw others hanging around other apartments /buildings in PDL ?
Phone activity proves diddly squat unless you have corroborating evidence of entrance to the apartment.
There is NONE.
You obviously have not read the files if you need to ask that question, there are many instances there.
If the phone records prove 'diddly squat' why did the original investigators spend so much time on the Drs' McCann and their friends' calls which they and internet 'investigators' have spent an inordinate amount of time analysing.
They missed the connections Heri (without recourse to their resources)and the Met spotted.
There is enough circumstantial evidence to suggest apartment 5a was under surveillance before and during the McCann family occupancy.
Whether this was for the purposes of burglary or other nefarious activity such as entering the property as in the cases highlighted by the Met where children were assaulted, could only be known if they had been properly investigated.
Where is the proof burglaries were rife in the environs of PDL and the complex itself? it was being denied until fairly recently.
Where is the proof children were assaulted in their beds? that too was denied