Getting Location update from terminated state after 2000 meters in IOS

[alihasan21987]

Your Environment

• Plugin version: 4.16.5
• Platform: iOS
• OS version:17.6.1
• Device manufacturer / model: IPhone 14 Pro Max
• React Native version (react-native -v): 0.70.6
• Plugin config
  BackgroundGeolocation.ready({
  debug: false,
  locationAuthorizationRequest: 'Always',
  showsBackgroundLocationIndicator: false,
  logLevel: BackgroundGeolocation.LOG_LEVEL_VERBOSE,
  desiredAccuracy: desiredAccuracy
  ? desiredAccuracy
  : BackgroundGeolocation.DESIRED_ACCURACY_HIGH,
  deferTime: 0,
  startOnBoot: true,
  enableHeadless: true,
  preventSuspend: false,
  stopOnTerminate: false,
  elasticityMultiplier: 1,
  foregroundService: true,
  disableElasticity: false,
  enableTimestampMeta: false,
  disableStopDetection: false,
  geofenceModeHighAccuracy: true,
  useSignificantChangesOnly: false,
  disableAutoSyncOnCellular: false,
  disableMotionActivityUpdates: true,
  distanceFilter: distanceFilter ?? 9,
  disableLocationAuthorizationAlert: false,
  activityType: BackgroundGeolocation.ACTIVITY_TYPE_OTHER,
  locationAuthorizationAlert: {
  titleWhenNotEnabled: t('title_when_not_enabled'),
  titleWhenOff: t('title_when_off'),
  instructions: t('location_auth_alert_instructions'),
  cancelButton: t('location_auth_alert_cancel'),
  settingsButton: t('location_auth_alert_settings'),
  },
  stopTimeout: 5,
  desiredOdometerAccuracy: 10,
  backgroundPermissionRationale: {
  title: 'Allow "App" to use your location?',
  message:
  'Please select "Change to Always Allow" below so the App can access your location even when you are not using the app.',
  positiveAction: 'Change to "Always Allow"',
  negativeAction: 'Cancel',
  },
  })

Expected Behaviour

It should give location update after 200 meters when app is in terminated State.

Actual Behaviour

It is giving location update after 2000 meters when app is in terminated State.

Steps to Reproduce

1.Install App with above Plugin Config.
2.Move App to terminated State & start on route with device.
3.It will give location update after about 2000 meters.

Logs

[background-geolocation (21).log](https://github.com/user-attachments/files/17377677/background-geolocation.21.log)

[christocracy]

It will give location update after about 2000 meters.

200 meters is typical, not a guarantee. The plug-in has no control over this. It depends upon the environment; the presence of wifi signals and distance between cell towers.

if it works, it works.

[mshehzad1]

@christocracy

In some cases, the iOS app fails to capture locations when it's in a killed state and the user starts moving after being stationary for several hours. Despite the device being moved, the location services do not trigger for 10 to 15 km. Can you clarify why this behavior occurs with Transistorsoft on iOS, while it works as expected in the same scenario on Android, even in the killed state?

[christocracy]

Can you clarify why this behavior occurs with Transistorsoft on iOS, while it works as expected in the same scenario on Android

There is no correlation between the two.

It can only be due to the environment (assuming you’ve granted “Always” permission and Wifi is not disabled). I suggest you test in the iOS Simulator with location simulated with “Freeway Drive”. If it works properly in the simulator, that’s all you can do.

[mshehzad1]

This works properly when the app is active, but the issue occurs when the app is stationary, and then starts moving after some time, Only the start location are not coming in properly way.

Both devices have the same internet connection, and on Android it works, but in iOS it did activate after 1000 to 2000 metes of drive.

Just want to understand is this actual behaviour of TransistorSoft in iOS devices?

[christocracy]

The iOS plugin relies on a 200 meter geofence around the last known position, the exit of which signals the device is moving.

it’s completely up to the OS to monitor and determine when this geofence is exited. This completely depends upon the nature of the environment (presence of wifi signals, spacing of cell towers).

there is nothing the plug-in can do to improve this behaviour for some particular device in some particular environment. You are completely in the hands of the OS.

in my 10 years experience, testing throughout the world, the typical distance to detect movement is about 200 meters, but there is no guarantee.

see my road trip in France this summer:
https://www.transistorsoft.com/lab/france

[christocracy]

Test in the simulator.