Comparing OnePlus 13 with Samsung Galaxy S25 Ultra

The OnePlus 13 and Samsung Galaxy S25 Ultra are two of the most talked-about devices on the market in 2025. Both phones come with impressive specs, cutting-edge technology, and a premium design, making it tough to choose between them. But whether you're drawn to OnePlus’s fast charging and streamlined interface or Samsung’s powerhouse camera and display, these two devices cater to different needs and preferences. In this post, we’ll compare OnePlus 13 vs Samsung Galaxy S25 Ultra across key aspects, helping you decide which suits you the best.

Phone Arena made the “most fun comparison in 2025” between Samsung’s Galaxy S25 Ultra and OnePlus’s 13 and found notable insights about the phones’ design, display, performance, cameras, battery life, and more. Let’s explore them below.

The Galaxy S25 Ultra is expected to continue the Ultra series' legacy of being one of the largest smartphones. According to rumors, it will have a slightly smaller and rounder design than the S24 Ultra. The frame is anticipated to be composed of titanium, which will increase durability while preserving a lightweight design.

The global version of the OnePlus 13 is anticipated to be slightly thicker than the S25 Ultra, with dimensions of 162.9 x 76.5 x 8.5 mm. The huge circular camera module is still present. However, it is not attached to the frame like it was in previous versions. Most likely made of aluminum, the frame strikes a balance between weight and durability.

A 6.8-inch OLED screen with 1-120Hz LTPO technology is a feature of the Galaxy S25 Ultra. It is protected by Gorilla Glass Armor, which is noted for its durability and anti-reflective characteristics, improving usability in direct light.

While the OnePlus 13 has a 6.82-inch OLED display with a similar 1-120Hz LTPO technology. It uses "Crystal Shield super-ceramic glass" for protection, but it doesn't go into depth on how long it will last or how reflective it is.

It is anticipated that the Snapdragon 8 Elite (3nm) processor would power both handsets, guaranteeing superior performance.

The Galaxy S25 Ultra is anticipated to use UFS 4.04 storage technology, which is twice as fast as previous models and comes in configurations ranging from 12GB RAM and 256GB storage to 16GB RAM and 1TB storage.

While the OnePlus 13 will use the same extremely fast UFS 4.0 storage and include 12GB of RAM and 256GB of storage, or up to 24GB of RAM and 1TB of storage.

The Galaxy S25 Ultra is expected to keep the same camera configuration as the S24 Ultra, but it will use a new 50MP Samsung Isocell JN3 sensor for the ultra-wide camera, which should provide better low-light performance and greater detail.

While keeping the 50MP primary sensor, the OnePlus 13 adds new 64MP 3x telephoto and 48MP ultra-wide cameras. Although there have been no direct comparisons, the improvements point to possible gains in image quality.

It is anticipated that the Galaxy S25 Ultra will have a 5,000 mAh battery. Optimizations in the Snapdragon 8 Elite processor and possible features like "Battery AI" could extend battery life while maintaining the same capacity. It is projected that charging capacities will increase to 25W wireless and 45W wired charging.

A 6,000 mAh battery will be able to fit into a slim design with the OnePlus 13 thanks to improved battery technologies. With a great battery life rating for its predecessor, the OnePlus 13 is expected to do even better. Charging speeds are expected to be 80W wired and 50W wireless, but particular chargers and cables may be required.

The 12GB RAM and 256GB storage option of the Galaxy S25 Ultra is projected to retail for about $1,299, while larger storage models will cost about $1,599.

The OnePlus 13 is positioned as a competitive flagship choice with a starting price of $899 for the 12GB RAM and 256GB storage model and $999 for the 16GB RAM and 512GB storage variation.

Your priorities will determine whether you choose the OnePlus 13 or the Galaxy S25 Ultra. The Galaxy S25 Ultra is a great choice if you appreciate high-end materials, a gorgeous display, cutting-edge camera features, and integration with Samsung's ecosystem (including the S Pen functionality in some variants). With an emphasis on high-end features and versatility, it provides a premium experience.

However, the OnePlus 13 is a standout choice if you value rapid charging, long battery life, and a more affordable flagship device without compromising on performance. Quick power-ups are guaranteed by its Warp Charge technology, and a clear, effective user experience is offered by its simplified OxygenOS.

Ultimately, the OnePlus 13 is a superior option if you want speed, value, and exceptional battery performance; if you're looking for luxury and top-tier features, you can get the Galaxy S25 Ultra.

The OnePlus 13 emphasizes performance and value, while the Samsung Galaxy S25 Ultra excels in features and innovation. Both are top-tier options, with the choice depending on user preferences and priorities.