diff --git a/core/service/src/androidUnitTest/kotlin/org/meshtastic/core/service/AndroidFileServiceTest.kt b/core/service/src/androidUnitTest/kotlin/org/meshtastic/core/service/AndroidFileServiceTest.kt
new file mode 100644
index 000000000..6fdcd2c1d
--- /dev/null
+++ b/core/service/src/androidUnitTest/kotlin/org/meshtastic/core/service/AndroidFileServiceTest.kt
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2026 Meshtastic LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.meshtastic.core.service
+
+import kotlinx.coroutines.test.runTest
+import org.junit.Assert.assertNotNull
+import org.junit.Test
+import io.mockk.mockk
+import android.app.Application
+
+class AndroidFileServiceTest {
+    @Test
+    fun testInitialization() = runTest {
+        val mockContext = mockk<Application>(relaxed = true)
+        val service = AndroidFileService(mockContext)
+        assertNotNull(service)
+    }
+}
diff --git a/core/service/src/androidUnitTest/kotlin/org/meshtastic/core/service/AndroidLocationServiceTest.kt b/core/service/src/androidUnitTest/kotlin/org/meshtastic/core/service/AndroidLocationServiceTest.kt
new file mode 100644
index 000000000..44435b7e6
--- /dev/null
+++ b/core/service/src/androidUnitTest/kotlin/org/meshtastic/core/service/AndroidLocationServiceTest.kt
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2026 Meshtastic LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.meshtastic.core.service
+
+import kotlinx.coroutines.test.runTest
+import org.junit.Assert.assertNotNull
+import org.junit.Test
+import io.mockk.mockk
+import org.meshtastic.core.repository.LocationRepository
+import android.app.Application
+
+class AndroidLocationServiceTest {
+    @Test
+    fun testInitialization() = runTest {
+        val mockContext = mockk<Application>(relaxed = true)
+        val mockRepo = mockk<LocationRepository>(relaxed = true)
+        val service = AndroidLocationService(mockContext, mockRepo)
+        assertNotNull(service)
+    }
+}
diff --git a/core/service/src/jvmTest/kotlin/org/meshtastic/core/service/JvmFileServiceTest.kt b/core/service/src/jvmTest/kotlin/org/meshtastic/core/service/JvmFileServiceTest.kt
new file mode 100644
index 000000000..e74a911eb
--- /dev/null
+++ b/core/service/src/jvmTest/kotlin/org/meshtastic/core/service/JvmFileServiceTest.kt
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2026 Meshtastic LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.meshtastic.core.service
+
+import kotlinx.coroutines.test.runTest
+import org.junit.Assert.assertFalse
+import org.junit.Test
+import org.meshtastic.core.common.util.MeshtasticUri
+
+class JvmFileServiceTest {
+    @Test
+    fun testWriteAndRead() = runTest {
+        val service = JvmFileService()
+        // Just verify it doesn't crash on invalid paths for now.
+        val result = service.read(MeshtasticUri("invalid_file_path.txt")) { }
+        assertFalse(result)
+    }
+}
diff --git a/core/service/src/jvmTest/kotlin/org/meshtastic/core/service/JvmLocationServiceTest.kt b/core/service/src/jvmTest/kotlin/org/meshtastic/core/service/JvmLocationServiceTest.kt
new file mode 100644
index 000000000..5db50f233
--- /dev/null
+++ b/core/service/src/jvmTest/kotlin/org/meshtastic/core/service/JvmLocationServiceTest.kt
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2026 Meshtastic LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.meshtastic.core.service
+
+import kotlinx.coroutines.test.runTest
+import org.junit.Assert.assertNull
+import org.junit.Test
+
+class JvmLocationServiceTest {
+    @Test
+    fun testGetCurrentLocationReturnsNullOnJvm() = runTest {
+        val service = JvmLocationService()
+        val location = service.getCurrentLocation()
+        assertNull(location)
+    }
+}