Download "Shortcut Master (Lite)" from Google Play store. Open the app and go to the options menu by clicking on the vertical 3 dots at the top right corner. Click on "Search...". Where it says "Enter text to search" at the bottom, type in "$apnsettingsactivity" without the quotes. The app name will be "Settings" and more detailed info about the app will show "com.android.settings.Settings$ApnSettingsActivity ". With my phone, it only popped up with that. If yours pops up with more apps after searching, just look for this field-> "com.android.settings.Settings$ApnSettingsActivity ". Click on it and click "Launch". Now you will be in the APNs window. Select the APN that is in use (bubbled in). Now you will be in the Edit access point window. Scroll down and look for "APN type". Select that and put in the field that pops up "default,mms,dun" without the quotes. Click "OK". Now, I believe the final step is to restart your phone.