how accurate is the timeline on google maps

[Allen Subject]

i keep getting told that its impossible for the phone to say I am somewhere I am not. can someone please answer that for me

 

[ManiacJoe]

Check to see that your phone has the correct time and date and time zone.
Check to see what accuracy level your GPS system is set to.
Have you installed any apps that spoof your GPS location?

Which phone?
Which version of android?
Which carrier?