Best Water-Resistant 5G Smartphones with Premium Audio in the UK 2025 | Expert Reviews

The Samsung Galaxy S24 Ultra stands out in the smartphone market with its exceptional camera capabilities and stunning AMOLED display. It offers industry-leading zoom features and top-tier low-light photography, setting a high benchmark for photography enthusiasts. With its powerful performance driven by the latest processor and impressive battery life, the S24 Ultra is built for heavy usage. Additionally, its premium design and robust ecosystem of features make it a top contender among flagship smartphones.

The iPhone 16 Pro Max tops this list for its combination of industry-leading spatial audio, polished stereo speakers and IP68 water resistance paired with Apple’s highly optimized 5G modem and silicon. Compared with the other handsets here, it delivers the strongest resale values and ecosystem advantages in the UK—making it a financially sensible premium buy for users who value long-term software support and accessory compatibility. Its audio processing and seamless integration with AirPods and Home ecosystems set a high bar versus the more hardware-focused audio implementations from Sony and ASUS.

Sony’s Xperia 1 VI stands out as the market leader for pure audio fidelity, offering class-leading wired and wireless playback, advanced tuning tools and pro-grade audio hardware alongside robust water resistance and 5G connectivity. Technically it rivals Apple on speaker quality while undercutting it on price in many UK configurations, giving buyers excellent value for audiophile-grade hardware without the premium ecosystem tax. For users prioritising lossless playback and native hi-res support, Sony’s audio stack and creator-focused features are a unique advantage over software-driven rivals like Google.

The Pixel 9 Pro leans on Google’s software strengths to deliver superior conversational audio, intelligent noise suppression and spatial audio enhancements on a water-resistant 5G flagship platform. While its raw speaker hardware may not eclipse Sony’s or Apple’s, its computational audio yields exceptional call clarity and adaptive sound that often outperforms on real-world use, offering a lower total cost of ownership via long-term updates and strong trade-in deals in the UK. This makes it a pragmatic choice for buyers who want premium audio experience driven by AI rather than purely by hardware.

OnePlus 12 delivers a compelling blend of flagship performance, finely tuned stereo speakers with Dolby Atmos support and dependable IP-rated water resistance at a price point that usually undercuts Apple and Sony. Its technical advantages include very fast charging and aggressive price-to-spec ratio, which makes it a financially attractive option for UK buyers seeking premium audio features without paying flagship premiums. Compared to Xiaomi and ASUS, OnePlus offers a more balanced all-round experience—strong audio, speed and battery convenience—appealing to mainstream audiophiles on a budget.

The Xiaomi 14 Ultra pairs flagship-class audio tuning and large, speaker-driven soundstage with top-tier imaging, 5G and IP68 water resistance while typically offering one of the best specs-per-pound values in the UK market. Its financial advantage is clear: similar or better hardware than some rivals for a lower headline price, making it the value leader for buyers who want premium sound and specs without the higher premium seen on Apple or Sony. Xiaomi’s partnerships and hardware-first approach mean you get comparable audio performance to more expensive phones while retaining excellent battery and charging tech.