diff --git a/models.proto b/models.proto
index 108ede2..272e2da 100644
--- a/models.proto
+++ b/models.proto
@@ -1289,6 +1289,11 @@ message MembershipTierData {
     string androidProductId = 17;
     string androidManageUrl = 18;
 }
+enum DeviceNetworkType {
+    WIFI = 0;
+    CELLULAR = 1;
+    NOT_CONNECTED = 2;
+}
 
 message Detail {
     string key = 1;