The iPhone 7 is hardy enough now to withstand a moderate dunk in up to 1m of water for up to 30 minutes. The iPhone 7 manages an IP67 rating for water and dust resistance, which is a little less than the certification achieved by the Galaxy S7 and Sony Xperia Z5, they are full of aggressive breaks from convention while wrapped in cases that look almost exactly like their two direct predecessors. Even that continuity of design is a break from convention; after almost a decade of Apple’s steady two-year iPhone update pattern, merely retaining the same design for a third straight year plays against expectations.