The application requires periodic (15-30 mins) data synchronization with the backend.
I implemented this using the WorkManager API, but I encountered the issue that synchronization only triggers when the application is running; if the user or the Android OS terminates the application, my sync worker stops working.
At the same time, I see that synchronization works on the emulator even if I terminate the process.

I have read a lot of information on this topic but cannot see any mistake on my end.

Could you please advise what might be the problem?

My test worker (writes logs in file):

class TestWorker
    (appContext: Context, params: WorkerParameters) :
CoroutineWorker(appContext, params) {

    override suspend fun doWork(): Result {

        Timber.d("Message from worker")
        return Result.success()
    }
}

My Application (starts sync worker):

@HiltAndroidApp
@Singleton
class WorkTestApp : Application() {
    override fun onCreate() {
        super.onCreate()

        val fileLogger = FileLogger(context = this)
        val reportingTree = ReportingTree(fileLogger)

        Timber.plant(reportingTree)

        val periodicWorkRequest = PeriodicWorkRequestBuilder<TestWorker>(
            repeatInterval = 15,
            repeatIntervalTimeUnit = TimeUnit.MINUTES
        ).build()

        val workManager = WorkManager.getInstance(this)
        workManager.enqueueUniquePeriodicWork(
            "SYNC_WORK_NAME",
            ExistingPeriodicWorkPolicy.KEEP,
            periodicWorkRequest
        )
    }
}

App manifest:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:name=".WorkTestApp"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.WorkerTest"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true"
            android:label="@string/app_name"
            android:theme="@style/Theme.WorkerTest">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>

</manifest>