Other Last line not available??

systemind

macrumors member
Original poster
Jul 24, 2011
41
21
Hello! Every time I try to call someone using my new iPhone XS Max I get a message saying last line not available. I’ve never seen this before on an iPhone ever. I received the phone today and put in the SIM card from my old iPhone 8 Plus. I’m on T-Mobile. Does anyone has any ideas? Thanks in advanced.
 

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systemind

macrumors member
Original poster
Jul 24, 2011
41
21
I find it crazy that no one knows about this issue and google shows absolutely nothing regarding this message!