I had to test this smartphone about 4 months in use, until I made the mistake there times in the water. Not that it would have run full or so - has kept you there. But I've used it while snorkeling in the sea. Saltwater! At first glance, one does not fall on a nuisance, but at the latest when the next calls a more and more callers will be assured that you can hardly understand. The salt makes its way to the membrane for micro and attenuates the sensitivity. Okay, it might be able to come, but when you read it, you are at least forewarned before. Unfortunately, then soaking brought no improvement in the tap water.
Battery life:
In several tests, the superior, or at least average battery life is advertised. This, unfortunately, I could not tell. Often I had to fight already, that I came across a normal business day. My external battery was my best friend. And I have the S4 Active used only average, has played no games and even LTE disabled. If you rely on a long battery life and comes with GPS on tour, one is "lost" in the worst case scenario, when suddenly the battery warning comes and you are on A. the world.
Performance:
The performance is flawless as with any appliance in the purchase condition. In this state, the whole test can be made on the Internet. Unfortunately, an enormous drop in velocity is observed when the device is longer in operation, more than 100 photos or videos were taken. Then it takes to load the gallery eternities. According to hang all apps that want to access them. If you have the drive encryption enabled, it is particularly critical. So show someone a photo fast times is no longer then.
Photos in the water:
If you want to take pictures underwater, you must first select the appropriate camera mode. It's quick and unproblematic. If the camera is completely underwater and it is all triggers on the volume button also super. Who now but the idea is this phone because of its suitability for outdoor sporting events to be able to take as Tough Mudder is mistaken. Every drop of water on the display is understood as a finger swipe or pressure from the S4 Active. In the worst case scenario, the phone makes then completely autonomously in the rain or in wet conditions. Due to its increased sensitivity can be partially undoing even sweat on the phone in your pocket and you're lucky if the internet is made. For me it has, for example, almost a second time ordered from Amazon, without that I would have noticed it. Here also helps if you have a mobile phone so plugging that the display on the outside of the pants
Conclusion:
Overall, I think it's still a great phone, which I can recommend. You just have to know how you have to treat it, then you have a lot of fun with it. Although now the S5 and S6 come out soon that (both waterproof), I would still revert to the S4 Active, since this a changeable battery and a fingerprint sensor (data protection).