diff --git a/src/com/android/phone/PhoneInterfaceManager.java b/src/com/android/phone/PhoneInterfaceManager.java
index b67b77a..44858d2 100755
--- a/src/com/android/phone/PhoneInterfaceManager.java
+++ b/src/com/android/phone/PhoneInterfaceManager.java
@@ -3085,7 +3085,12 @@
         String tac = null;
         if (phone != null) {
             String imei = phone.getImei();
-            tac = imei == null ? null : imei.substring(0, TYPE_ALLOCATION_CODE_LENGTH);
+            try {
+                tac = imei == null ? null : imei.substring(0, TYPE_ALLOCATION_CODE_LENGTH);
+            } catch (IndexOutOfBoundsException e) {
+                Log.e(LOG_TAG, "IMEI length shorter than upper index.");
+                return null;
+            }
         }
         return tac;
     }
@@ -3117,7 +3122,13 @@
         String manufacturerCode = null;
         if (phone != null) {
             String meid = phone.getMeid();
-            manufacturerCode = meid == null ? null : meid.substring(0, MANUFACTURER_CODE_LENGTH);
+            try {
+                manufacturerCode =
+                        meid == null ? null : meid.substring(0, MANUFACTURER_CODE_LENGTH);
+            } catch (IndexOutOfBoundsException e) {
+                Log.e(LOG_TAG, "MEID length shorter than upper index.");
+                return null;
+            }
         }
         return manufacturerCode;
     }