I had location history enabled for Google Maps and didn't know it. I found it interesting to see which spots Google logged for me over the past week or month, and I don't plan on disabling the service. It's nice to know, however, that I can delete portions of my location history or all of it, as well as disable the feature from tracking me in the future.
To see if you have location history enabled, head to the Google Maps Location history page. Click the gear-icon button to access History settings. Here, you can choose to disable or enable the service.
Disabling location history, however, does not remove your past history. If you'd like to erase the locations Google has stored for the past 30 days, head back to the Location history page. The default time period shows location history for the current day, so you may not see any plots on the map.
Use the pull-down menu below the calendar on the left to show your history, up to 30 days. If you choose a time period in which Google has tracked your location, you'll see the points where you've been on the map. And below the calendar, you'll see options to delete your history from the time period you have chosen or to delete all history.
You can also delete a specific location from your history. Click on one of the red points on the map, then in the pop-up window click Delete from history.
For iOS users who want to disable Google's location reporting from your iPhone, you will need to disable Location Reporting from the Google search app and any other Google apps on your iPhone, such as Google+.
For the Google search app, tap on your profile pic in the upper-left corner to open Settings. Next, tap on Privacy,choose Location and tap the slider next to Location reporting to turn it off. You can also access your Location History from the Google search app and delete it.
For the Google+ app, tap the hamburger button in the upper-left corner and then tap the gear icon to open Settings. Tap Location History and then choose Location Reporting. Tap Do not report to turn it off.
You can also see which apps are using location services on your iPhone by going to Settings > Privacy > Location Services.
For Android users, the process is streamlined. Go to Settings > Location > Google Location Reporting. For Location Reporting, tap the slider to turn it off.