diff --git a/libs/logging/src/main/kotlin/com/getcode/utils/ErrorUtils.kt b/libs/logging/src/main/kotlin/com/getcode/utils/ErrorUtils.kt
index 25b93af61..5fa512d29 100644
--- a/libs/logging/src/main/kotlin/com/getcode/utils/ErrorUtils.kt
+++ b/libs/logging/src/main/kotlin/com/getcode/utils/ErrorUtils.kt
@@ -93,9 +93,24 @@ object ErrorUtils {
                 throwable is SocketException ||
                 throwable.cause is SocketException
 
-    private val gmsTransientMessages = setOf("SERVICE_NOT_AVAILABLE", "FIS_AUTH_ERROR", "MISSING_INSTANCEID_SERVICE", "TOO_MANY_REGISTRATIONS")
+    /**
+     * Error strings Google Play Services returns for a failed FCM registration. They describe the
+     * device's GMS state or the FCM backend, not app code, so they stay out of Bugsnag. Firebase
+     * wraps them as `IOException("FCM Registration failed!")` -> `ExecutionException` ->
+     * `IOException(<code>)`, which is why the cause chain is walked.
+     */
+    private val gmsTransientMessages = setOf(
+        "SERVICE_NOT_AVAILABLE",
+        "FIS_AUTH_ERROR",
+        "MISSING_INSTANCEID_SERVICE",
+        "TOO_MANY_REGISTRATIONS",
+        "AUTHENTICATION_FAILED",
+        "INTERNAL_SERVER_ERROR",
+        "InternalServerError",
+        "PHONE_REGISTRATION_ERROR",
+    )
 
-    private fun isGmsTransientError(throwable: Throwable): Boolean =
+    internal fun isGmsTransientError(throwable: Throwable): Boolean =
         generateSequence(throwable) { it.cause }
             .any { it is java.io.IOException && it.message in gmsTransientMessages }
 
diff --git a/libs/logging/src/test/kotlin/com/getcode/utils/ErrorUtilsTest.kt b/libs/logging/src/test/kotlin/com/getcode/utils/ErrorUtilsTest.kt
index 84cc366dc..09efc856c 100644
--- a/libs/logging/src/test/kotlin/com/getcode/utils/ErrorUtilsTest.kt
+++ b/libs/logging/src/test/kotlin/com/getcode/utils/ErrorUtilsTest.kt
@@ -1,6 +1,8 @@
 package com.getcode.utils
 
+import java.io.IOException
 import java.net.UnknownHostException
+import java.util.concurrent.ExecutionException
 import kotlin.test.Test
 import kotlin.test.assertFalse
 import kotlin.test.assertTrue
@@ -34,4 +36,24 @@ class ErrorUtilsTest {
         assertFalse(ErrorUtils.shouldReport(error, error))
         assertFalse(ErrorUtils.shouldReport(Fault(), error))
     }
+
+    @Test
+    fun `a wrapped FCM registration failure is a transient GMS error`() {
+        for (code in listOf("AUTHENTICATION_FAILED", "INTERNAL_SERVER_ERROR", "SERVICE_NOT_AVAILABLE")) {
+            val error = IOException("FCM Registration failed!", ExecutionException(IOException(code)))
+            assertTrue(ErrorUtils.isGmsTransientError(error), code)
+        }
+    }
+
+    @Test
+    fun `a bare GMS error code is a transient GMS error`() {
+        assertTrue(ErrorUtils.isGmsTransientError(IOException("InternalServerError")))
+    }
+
+    @Test
+    fun `an unrelated IOException is not a transient GMS error`() {
+        val error = IOException("FCM Registration failed!", ExecutionException(IOException("disk full")))
+        assertFalse(ErrorUtils.isGmsTransientError(error))
+        assertFalse(ErrorUtils.isGmsTransientError(Fault()))
+    }
 }