Sometimes City is sent to Mixpanel even useIPAddressForGeoLocation is set as false.

[ttmdung203]

The way I set useIPAddressForGeoLocation:

mixpanelInstance = Mixpanel.initialize(token: token, trackAutomaticEvents: true)
mixpanelInstance.delegate = self
mixpanelInstance.useIPAddressForGeoLocation = false

Even I check useIPAddressForGeoLocation at mixpanelWillFlush, the city is still sent:

 public func mixpanelWillFlush(_ mixpanel: MixpanelInstance) -> Bool {
       return !mixpanel.useIPAddressForGeoLocation
}

This issue is quite critical since it affects to my privacy document.
Prefer to move delegate & useIPAddressForGeoLocation to initialize function.
Thanks in advance.

[jaredmixpanel]

@ttmdung203 The SDK does not send geolocation info. When useIPAddressForGeoLocation is true the server will use the IP address to add geo info to the event after it is received. Make sure you're not manually setting a city property anywhere in your code. For further assistance please reach out to support@mixpanel.com

[ttmdung203]

I set useIPAddressForGeoLocation = false immediately as you see at below code, there's no manual city parameters for sure.

mixpanelInstance = Mixpanel.initialize(token: token, trackAutomaticEvents: true)
mixpanelInstance.delegate = self
mixpanelInstance.useIPAddressForGeoLocation = false

It happens randomly, I was looking into source code and found that there is a chance of flushing events immediately right after Mixpanel.initialize, before I set delegate and useIPAddressForGeoLocation. (Version: 4.2.0)

init(apiToken: String?, flushInterval: Double, name: String, trackAutomaticEvents: Bool, optOutTrackingByDefault: Bool = false,
         useUniqueDistinctId: Bool = false, superProperties: Properties? = nil,
         serverURL: String? = nil) {
....
....
 flushInstance.flushInterval = flushInterval
}

[ttmdung203]

@jaredmixpanel for visibility.

[jaredmixpanel]

@ttmdung203 That's not the correct way to initialize and use the Mixpanel instance. You don't need to store the instance. You should always use the shared instance provided by Mixpanel.mainInstance():

Mixpanel.initialize(token: token, trackAutomaticEvents: true)
Mixpanel.mainInstance().delegate = self
Mixpanel.mainInstance().useIPAddressForGeoLocation = false
...
Mixpanel.mainInstance().track(event: "My Event")

Try that and let me know if it makes a difference.

[ttmdung203]

Thanks for your quick response, @jaredmixpanel
I've just tried the way you suggested, the city sometimes is sent to Mixpanel when I open app.

Reproduce steps:

• Open app and open some screens (to track screen viewed event), then close and open app again (to flush events automatically).
• Repeat it until seeing the city in mixpanel. (It happens ~5-10% the time I do above steps).

Mixpanel.initialize(token: token, trackAutomaticEvents: true)
Mixpanel.mainInstance().useIPAddressForGeoLocation = false
Mixpanel.mainInstance().delegate = self

...
Mixpanel.mainInstance().track(event: "Event name")
```