diff --git a/src/android/NetworkManager.java b/src/android/NetworkManager.java
index 0323f69..59965bd 100755
--- a/src/android/NetworkManager.java
+++ b/src/android/NetworkManager.java
@@ -244,7 +244,7 @@ public class NetworkManager extends CordovaPlugin {
                 return TYPE_ETHERNET;
             }
             else if (type.equals(MOBILE) || type.equals(CELLULAR)) {
-                type = info.getSubtypeName();
+                type = info.getSubtypeName().toLowerCase(Locale.US);
                 if (type.equals(GSM) ||
                         type.equals(GPRS) ||
                         type.equals(EDGE)) {