whitelistandregularusage

I am having issues with this too! Went to Tmobilr store and the staff told me we've never seen this before. They told me to go to apple store so i did. They did all the test and said its the sim card because they took it out and put it in another phone. Then i contacted support the said its because the phone is locked. I said why isnt it on both my phones and the other phone was just bought (making payments on both) a month ago? Nobody can tell me anything or help me!! Its sad that their employees know nothing and just make you look crazy as hell! Can anyone help me figure this phone nighmare out?? Thank you