iOS quietly keeps its own record of the places a device returns to. Significant Locations logs the locations an iPhone visited regularly, when it arrived and left each one and how long it stayed. Apple built it to power features like traffic predictions and location-based suggestions, not for an investigation, which is precisely what makes it valuable evidence: it is the device's own contemporaneous account of its whereabouts, written long before anyone had a reason to question it.
Sherlock Forensics iPhone Analyzer parses that record into a dedicated view: each visited place with its dwell time and the enter and exit transitions that bound it, plotted on an offline map. In matters that turn on presence, where a device was at a given time, whether it visited a particular place, how its movements line up against a claimed account, this is frequently the single most consequential artifact on the phone.
What gives the record its evidentiary weight is that iOS was not keeping it for a courtroom. The device logged these visits as a byproduct of ordinary use, continuously, without anyone deciding which places mattered, which is exactly why a defense or a prosecution finds it hard to argue the record was curated after the fact. The dwell times add a dimension a single GPS ping cannot: not just that a device passed through a location but that it stayed there for two hours, ten minutes or overnight, which is often the difference between presence and mere transit. An examiner who reads the transitions in order can reconstruct a day's movement as the device itself recorded it, then test that reconstruction against every other artifact on the phone.
