Iapnupdatetfdata Straighttalk Com Iapnupdateatt Straighttalk Com. Here are the steps with pictures: When i go into settings > cellular > there are no options under > cellular data options other than enable lte and data roaming.
I guess whether the settings > general > cellular > cellular data network entry shows up depends on the sim card itself. Once you can make calls: It immediately downloads a file and launches the iphone’s preferences and you will be taken to this screen: