att to straight talk APN settings?? help

[keith324]

Just got the s4active running 4.3, tried to switch from att to straight talk, got my number transferred over with the compatible sim card. I can receive and send calls and texts, but no internet and no MMS. Tried using the straight talk settings but nothing is working and customer service is not even answering? I've tried a few other APN settings but no luck. Any ideas or advice is appreciated.