[stanmancan]

Did the sisters know where you lived? Curious if the police provided them with an area and the sisters were able to give a proper address?

[xandrius]

Why is it so hard to believe that the police can use our devices to backtrack us, as both carriers and police officers have said numerous times?

[stanmancan]

Occams razor

[direwolf20]

says that police can locate phones

[stanmancan]

To be honest I thought OP said they lived in an apartment; a house is a different story.