Samsung Galaxy S25 Ultra vs Xiaomi 15 Ultra: Which Flagship Is the Best?

Two high-ranking competitors in the smartphone arena for 2025 are the Samsung Galaxy S25 Ultra and Xiaomi 15 Ultra. These flagship phones feature state-of-the-art technology with performance and superior aesthetics to match. But the real question is which of these two should you prefer? This comparative study would clear that out.

Design and Display of Samsung Galaxy S25 Ultra And Xiaomi 15 Ultra

The Samsung Galaxy S25 Ultra sports a 6.8-inch QHD Dynamic AMOLED 2X screen that can go up to a maximum refresh rate of 144Hz. Meanwhile, the Xiaomi 15 Ultra has a 6.7-inch AMOLED LTPO display with a 120Hz maximum refresh rate. The design of both phones is curved and protected by Gorilla Glass Victus 3; however, Samsung's display enjoys the greener pasture when it comes to size and brightness.

Camera Performance

The Samsung Galaxy S25 Ultra features a 200-megapixel main sensor, a 50-megapixel periscope telephoto lens, and a 12-megapixel ultrawide camera. Space zoom is supported for up to 100x.

For the 15 Ultra, four 50-megapixel sensors, the company says, include a Sony LYT900 sensor backed by advanced Leica optics. Xiaomi thus has an edge in practically offering finer details and color realism to photos.

Performance And Chipset

Both are powered by the Snapdragon 8 Gen 4 chip, built on a 4-nanometer process, with both having either 12 or 16GB of RAM and UFS 4.0 storage. There are no differences between these two devices in terms of gaming, multitasking, or handling any AI features.

Battery and Charging

With a capacity of 5,000mAh, the Galaxy S25 Ultra charges at 45W wired and 25W wireless.

With an identical battery, the Xiaomi 15 Ultra can do 90W wired and 50W wireless charging. Thus, Xiaomi is way ahead when it comes to charging speeds.

Price and Availability

The S25 Ultra is a more expensive device, but it's famous because of its software updates and brand reliability throughout the years. The Xiaomi 15 Ultra, on the other hand, packs a lot more features at a much lower price, especially in camera and charging.

If you're a brand-dependent user, software updates stick with the Galaxy S25 Ultra and reliability.

For someone who likes to price a phone on a budget while still having potent charging and camera capabilities, the Xiaomi 15 Ultra will be a stellar choice.