Wasn't there some issue earlier in the day where she knocked Brian's (or one of her drivers/boyfriend/pimp/whatever) phone into some water? If so, she may have loaned him her phone and then borrowed another one from one of the other guys just to use while she did that night's gigs.
She spilled a drink on his phone.
That does not fit with Jarriel Johnsons statement.
She spilled on his phone - he got angry and took her home. He said later, when his phone was NOT working, he called her and told her that he could NOT drive her.
I think he got mad again when the phone wouldnt work.