When discussing the ship's paperwork, the detectives note that the address given doesn't exist in LeHavre, "or, for that matter, anywhere in Brittany." LeHavre, is part of Normandy, not Brittany (it's not even on the border but on the opposite side east of Normandy).
When discussing the ship's paperwork, the detectives note that the address given doesn't exist in Le Havre. Rue de Rivoli actually does exist in Le Havre, however it's nowhere near the port. What's more, it's in Normandy, not Brittany.
Stringer explains his decision to sell his telephone stocks by arguing that if someone like Poot could afford two cell phones then the market was saturated and they would be unable to sell any more. But he had just mentioned that the gang had provided Poot with one of the phones, meaning that Poot only had to pay for one himself. Furthermore, Stringer was overlooking the fact that companies would come out with new more sophisticated, and thus desirable, cell phones which would continue to drive demand.
Near the end, a Greek store owner destroys a digital camera after a guy takes his picture with it. This would do absolutely nothing to destroy the picture since it wouldn't destroy the memory card (unless there was an EXTREMELY lucky hit that breaks it) and as a retailer he should know this very well. All he did was ruin a perfectly sell-able camera.