Open App Drawer and go to Settings  Wireless & networks More... Mobile networks Access point names Press ➕ button on top right corner. Enter name: Liberty Wireless
APN: pwg
Proxy:
Port:
Username:
Password:
Server:
MMSC: http://pwg.mmsmvno.com/mms/wapenc
MMS Proxy:
MMS Port:
MCC:
MNC:
Authentication type:
APN type: Keep default values for all blank fields shown above. Press menu button (top right) and select Save. Done. | 
