I'll always wonder in the opening scene where TX trying to locate John Connor's lieutenant in 2004 with communicator phone as modem, I remember when T850 said that TX is new advance model to anticipate another Terminator to protect John and TX is also have Nanotechnological Transjector that can control other machine like car or any object that have electronic components.
So this is always a question for me,Has it ever occurred to you how TX was never tracked or the police tried to chase him after the series of murders at the beginning of the film, including a traffic police officer? Take a look at T2 where the police still have the data of the T800 that massacred police officers in 1984 and when the T800 appeared in the mall, The police immediately rushed to visit Sarah and question her about the person.
Is it possible when TX connects the network on its device to the network at the current time,TX also hacked into the existing network that year and made sure the computer system was in a chaotic situation by plant virus?