I Got the Hook Up (1998) on Netflix

Plot summary

Black and Blue are broke, and they make their living out of a van, selling television sets and boomboxes to whoever will buy them. A delivery driver leaves a shipment of cell phones with them by mistake, and the pair start selling the handsets from the back of the van. The phones develop faults, and the pair has to deal with unsatisfied customers. A local crime boss named Roscoe and his enforcer, T-Lay, see a deal of their own go sour and blame Black and Blue for it. Federal agents are drawn to the pair's new line of business as well.