I can't change the APN settings on my Samsung Galaxy SII phone. I'm with Straight Talk. Transferred number from old phone to new phone that I bought off eBay. Bought a new Sim card to go with it. I activated the phone and I can make calls, but can't get on internet or use MMS. When I go to change my APN settings I hit the menu button and all that comes up is Restore to Default? There's no option to create new APN settings. Any clue what I can do to fix this???