Corrected entry: When the helicopter crashes and Sean gets his phone out of a plastic bag it is an iPhone. Later when Henry asks Sean for his phone to take a picture of the island map it is a Blackberry. Then later when Sean takes his phone out it is an iPhone once again.
Corrected entry: In the scene when Hank is pointing out where the decoded geographical location of Mystery Island is on the globe, he is pointing to the wrong coordinates. Hank is pointing at a place around the Caribbean Sea and the mysterious island is actually located in the South Pacific Ocean, which Sean says in the same scene.
Correction: He is pointing in Asia, so he is actually right. You can see Malaysia, China, Thailand etc which is not the Caribbean at all.
Correction: When Hank asks for the phone to take a picture of the map it is still an iPhone.