Thank you. I was trying to find the settings for my i537 (s4 active) to work on straight talk and changing to a combination with these settings worked. in the end i ended up with:
name: straight talk
apn: tfdata
proxy: proxy.mvno.tracfone.com
port: 80
user name: not set
password: not set
server: not set
mmsc:
http://mms-tf.net
mms proxy: mms3.tracfone.com
mms port: 80
mcc: 310
mnc: 410
authentication: none
apn type: not set
apn protocol: ipv4
apn roaming protocol: ipv4
apn enabled
bearer: unspecified