What does "Big bag" mean in this context?

If the squad ain't with me then it ain't right
Yeah, ay woo woo woo
P-P-P-Lo, time to bring the bass back
Ay, ay, ay, ay
Same squad, same squad, same squad
Droptop coupe, dodge raindrops
Big bag plays on FaceTime

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This is a part of the lyrics "Same Squad" by P-L0.
I just wonder what "Big bag plays on FaceTime" means.

I know big bag means a lot of money in the slang term.
In this context, is it also meaning a lot of money? or Does it have
another meaning? Please let me help understood. : )