According to Apple's iPhone X and iPhone 8 webpages, the new devices have exactly the same dust, splash and water resistance just like last year's iPhone 7 models. In other words, iPhone 8 and iPhone X are still rated IP67 under IEC standard 60529.
I've been thinking of buying Samsung's Galaxy s5, since it's water-resistant and uses an Android OS version that I like. I've seen several used galaxy s5 offers online and in stores, but I was wondering if getting a used model is worth it when compared to buying a brand new one. I don't want to pay more for an unused phone, but I'm worried that a used s5 will come with defects or won't be water-resistant. Anyone got any thoughts on this?