Galaxy S 4 Active phones are advertised as water-resistent, which means it’s often portrayed as submerged in pools of water. In real life, however, this is not as safe as one might expect. That’s why AT&T has offered to replaced the water damages, but only once.
Samsung designed and tested the Galaxy S 4 Active to adhere to IP67 standards for water resistance (1 meter for 30 minutes). If your Galaxy S 4 Active has been damaged due to water exposure, bring it back to an AT&T retail store as soon as possible for a one-time exchange for another Galaxy S 4 Active.
While this may be a case of false advertising, water damaged phones were never covered under the warranty. The phone’s IP67 rating simply means it can survive a water submersion for 30 minutes and only at 1 meter deep. IT may be good for filming in the rain, but the Aqua-mode advertised is not at all foolproof for swimming.
Likewise, Sony’s Xperia Z is rated at IP57 – same water resistant feature of Galaxy S 4 Active but less dust resistant. Neither of the phones are warranted for water damage, so take my advice and keep them properly sealed and buy proper cases if you want to protect your investment. If you must shoot underwater, try a dry-pack. Even the superior Lifeproof cases are not user-proof.