Help please, can someone explain this in layman terms

I am enclosing some code from an app I found on my phone. It is from the manifest.xml file. Please could you help me decipher it... I suspect it may have been used surreptitiously to activate my phones mobile hotspot. Perhaps I am way off base, but I have never even once used the hotspot functionality on this device, yet my data usage shows almost 2 GB of tethering data in only 4 days. Anyway, here it is and thanks for any information you can provide.

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="h**p://schemas.android.com/apk/res/android"
android:sharedUserId="android.uid.system" android:versionCode="1" android:versionName="1.0.1" package="com.sec.automation" platformBuildVersionCode="22" platformBuildVersionName="5.1.1-G360T1UVU1APG2">
<uses-sdk android:minSdkVersion="22" android:targetSdkVersion="22">
</uses-sdk>
<permission android:name="com.sec.modem.settings.permission.KE YSTRING" android:protectionLevel="0x00000003">
</permission>
<application android:label="@7F030000" android:debuggable="false">
<activity android:label="@7F030001" android:name="TetheringSettings" android:permission="com.sec.modem.settings.permiss ion.KEYSTRING">
<intent-filter>
<action android:name="android.intent.action.MAIN">
</action>
</intent-filter>
</activity>
<receiver android:name="UltraKeyStringBroadcastReceiver" android:permission="com.sec.modem.settings.permiss ion.KEYSTRING">
<intent-filter>
<action android:name="android.provider.Telephony.SECRET_CO DE">
</action>
<data android:scheme="android_secret_code" android:host="638">
</data>
</intent-filter>
</receiver>
</application>
</manifest>

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