diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index cae19d3..1c7f9a6 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -63,4 +63,9 @@
         </service>
     </application>
 
+    <queries>
+        <intent>
+            <action android:name="com.google.android.euicc.action.PARTNER_CUSTOMIZATION" />
+        </intent>
+    </queries>
 </manifest>
diff --git a/app/src/main/java/im/angry/openeuicc/ui/SlotMappingFragment.kt b/app/src/main/java/im/angry/openeuicc/ui/SlotMappingFragment.kt
index e17f60e..89412ab 100644
--- a/app/src/main/java/im/angry/openeuicc/ui/SlotMappingFragment.kt
+++ b/app/src/main/java/im/angry/openeuicc/ui/SlotMappingFragment.kt
@@ -4,6 +4,7 @@ import android.annotation.SuppressLint
 import android.os.Bundle
 import android.telephony.TelephonyManager
 import android.telephony.UiccSlotMapping
+import android.util.Log
 import android.view.LayoutInflater
 import android.view.MenuItem
 import android.view.View
@@ -45,6 +46,10 @@ class SlotMappingFragment: BaseMaterialDialogFragment(),
     private lateinit var adapter: SlotMappingAdapter
     private lateinit var helpTextView: TextView
 
+    private val partner: Partner? by lazy {
+        Partner.getInstance(requireContext())
+    }
+
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
@@ -67,6 +72,12 @@ class SlotMappingFragment: BaseMaterialDialogFragment(),
         toolbar.setOnMenuItemClickListener(this)
     }
 
+    override fun onStart() {
+        super.onStart()
+        val mappings = partner?.getString("sim_slot_mappings_json")
+        Log.e(TAG, "sim_slot_mappings_json = $mappings")
+    }
+
     override fun onResume() {
         super.onResume()
         setWidthPercent(85)
diff --git a/app/src/main/java/im/angry/openeuicc/util/Partner.kt b/app/src/main/java/im/angry/openeuicc/util/Partner.kt
new file mode 100644
index 0000000..43ecc18
--- /dev/null
+++ b/app/src/main/java/im/angry/openeuicc/util/Partner.kt
@@ -0,0 +1,51 @@
+package im.angry.openeuicc.util
+
+import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.content.res.Resources
+import im.angry.openeuicc.BuildConfig
+
+
+class Partner {
+    companion object {
+        private const val ACTION = "com.google.android.euicc.action.PARTNER_CUSTOMIZATION"
+
+        private val instances = mutableMapOf<String, Partner?>()
+
+        private val packageFlags: Int
+            get() {
+                val flags = if (BuildConfig.DEBUG)
+                    PackageManager.MATCH_UNINSTALLED_PACKAGES else
+                    PackageManager.MATCH_SYSTEM_ONLY
+                return flags or PackageManager.MATCH_DISABLED_COMPONENTS
+            }
+
+        fun getInstance(context: Context, action: String = ACTION) = instances.getOrPut(action) {
+            context.packageManager
+                .queryBroadcastReceivers(Intent(action), packageFlags)
+                .mapNotNull { it.activityInfo?.applicationInfo }
+                .firstNotNullOfOrNull {
+                    try {
+                        context.packageManager.getResourcesForApplication(it)
+                    } catch (_: PackageManager.NameNotFoundException) {
+                        null
+                    }
+                }
+                ?.let(::Partner)
+        }
+    }
+
+    private val resources: Resources
+
+    private constructor(resources: Resources) {
+        this.resources = resources
+    }
+
+    private fun getIdentifier(name: String) =
+        resources.getIdentifier(name, null, null).takeIf { it != 0 }
+
+    fun getString(name: String) = getIdentifier(name)?.let(resources::getString)
+
+    fun getBoolean(name: String) = getIdentifier(name)?.let(resources::getBoolean)
+}
\ No newline at end of file