"Location services" controls = GPS
"Airplane" mode controls = Cellular services & WIFI
Respectfully, from OP's link:
How to stop GPS tracking on iDevices?
If you use an iDevice like an iPhone or an iPad, follow the below-mentioned instructions to hide your location on your smartphone.
Step 1. Take out the iPhone’s Control Center by swiping from the bottom of the screen. In case you’re using iPhone X or above, swipe down from the top-right corner to reveal the
“Control Center”.
Step 2. Locate & turn off the
“Celluar”and "WIFI" icon or you can just enable the Airplane Mode on your smartphone. You can also just go to
settings > Airplane Mode to toggle the switch
Step 3.Disable your GPS radio. Some phones have this seperate setting. Go to
settings > privacy on iPhone and iPad. You will see a string of apps that use
Location Services. Move slider at the top.