In the following video, Motley Fool tech and telecom analyst Andrew Tonner discusses one big upcoming potential threat to Samsung's rollout of its newest flagship smartphone, the Galaxy S IV. He tells investors that while demand is very high for the new handset, that can be as much a blessing as a curse, as the company was plagued with supply-chain issues meeting demand on its last major rollout. He also tells investors what the key phone components will be to watch, to know whether the company will be able to keep up this time.