My fiance is having issues with boost mobile when she recieves and makes calls. She is using my old sprint galaxy s4 through boost mobile which they said wouldnt be an issue. About 3 weeks ago boost sent her a new sim card because she was having issues getting the 4g lte service and it fixed the issue a week later is when the calling issues started. She keeps getting a message when she calls saying (as of july 1st 2008 voice commad has been discontinued). And there is another error message with a woman but cant remember what it says and it hangs up the call. These messages only come up when she tries to make calls. Receiving calls usually dont go through unless you call more then once and boost mobile does not know what the issue is. Has anyone else had this issue or could give advice as to what to do? Thanks