How to secure your iPhone or iPad from hackers, snoopers, and thieves (iOS 12.2)
Location-based alerts, Apple ads, and suggestions are all very convenient, but in exchange for this you are allowing your location to be tracked. If you want to take control over this, head over to Settings > Privacy > Location Services > System Services and tweak the settings you feel make you more comfortable.
I generally keep Location-Based Alerts and Location-Based Suggestions on, and disable Location-Based Apple Ads, but you can turn them all off if you wish.
Gloss