diff --git a/roku/core.py b/roku/core.py
index 88eca69..2e11697 100644
--- a/roku/core.py
+++ b/roku/core.py
@@ -256,6 +256,9 @@ def _call(self, method, path, *args, **kwargs):
         resp = func(url, timeout=self.timeout, *args, **kwargs)
 
         if resp.status_code < 200 or resp.status_code > 299:
+            if resp.status_code == 401:
+                raise RokuException("Please ensure that mobile / network control "
+                                    "is enabled under Settings > Advanced Settings")
             raise RokuException(resp.content)
 
         return resp.content