background refresh

Hello sleepinglions,

Thank you for reaching out in Apple Support Communities. To access your apps for Background App Refresh, you'll need to go in Settings > General > Background App Refresh. From there you can locate your app and turn Background App Refresh off or on. Here's more information:

Use Background App Refresh

After you switch to a different app, some apps run for a short period of time before they're set to a suspended state. Apps that are in a suspended state aren’t actively in use, open, or taking up system resources. With Background App Refresh, suspended apps can check for updates and new content. 

If you want suspended apps to check for new content, go to Settings > General > Background App Refresh and turn on Background App Refresh. If you quit an app from the app switcher, it might not be able to run or check for new content before you open it again.

This information is outlined in this helpful article: Switch apps on your iPhone, iPad, or iPod touch - Apple Support

Best regards.

You may need to open the Tile app after restarting your phone. Other than that Tile doesn’t need any special treatment.