OnePlus 12 vs. Galaxy S24 Ultra: Flagship Face-off

Choosing between the OnePlus 12 and the Samsung Galaxy S24 Ultra is not just a battle of specs. It is a question of value. Samsung offers the absolute kitchen sink of features for a premium price, while OnePlus attempts to offer 95% of that experience for hundreds of dollars less. If you are trying to decide if the Samsung “Ultra” tax is worth it, or if the OnePlus 12 is the smart budget move, this comparison breaks down exactly what you get for your money.

The Price Divide: Where the Battle Begins

The most significant difference between these two devices is the cost. The pricing strategy sets the tone for the entire comparison.

  • Samsung Galaxy S24 Ultra: Starts at $1,299 for the 256GB model.
  • OnePlus 12: Starts at $799 for the 256GB model (often found cheaper with trade-in deals).

This creates a $500 gap. With the money you save buying the OnePlus 12, you could buy a PlayStation 5, a high-end pair of headphones, or a smartwatch. The burden of proof is on Samsung to demonstrate why its phone is worth that extra $500.

Design and Build Quality

Samsung and OnePlus have taken very different approaches to how a flagship phone should feel in 2024.

Samsung Galaxy S24 Ultra

Samsung has moved to a Titanium frame, similar to the iPhone 15 Pro. It feels dense, premium, and durable. The screen is completely flat this year, which is a major win for users who use the S Pen stylus or dislike accidental touches on screen edges. It also features Gorilla Glass Armor, which significantly reduces reflections and is highly scratch-resistant.

OnePlus 12

OnePlus sticks to a tried-and-true design: an aluminum frame with a curved glass screen. While the curved edges look sleek and make the phone feel thinner in the hand, they can be frustrating if you struggle with accidental palm touches. The phone is rated IP65 (water resistant against jets of water), whereas the Samsung is IP68 (submersible). This is one area where the lower price shows.

Display: The Battle of Brightness

Both phones offer massive, sharp AMOLED displays, but the specs tell an interesting story.

  • Samsung: 6.8-inch Dynamic AMOLED 2X, QHD+ resolution, 1-120Hz refresh rate. Samsung lists a peak brightness of 2,600 nits.
  • OnePlus: 6.82-inch ProXDR Display, QHD+ resolution, 1-120Hz refresh rate. OnePlus claims an eye-watering peak brightness of 4,500 nits.

In real-world usage, the difference in brightness is barely noticeable unless you are standing under direct, harsh sunlight. However, OnePlus includes a feature called Aqua Touch, which allows the screen to accurately register touches even when the display (or your finger) is wet. This is incredibly useful in rain or after washing your hands.

Performance and Battery Life

If you prioritize raw speed and endurance, the OnePlus 12 puts up a surprising fight.

The Processor

Both devices run on the Qualcomm Snapdragon 8 Gen 3. Samsung uses a “for Galaxy” version that is slightly overclocked, but in daily use like gaming or multitasking, the performance is virtually identical.

However, OnePlus is generous with RAM. The base model OnePlus 12 comes with 12GB of RAM and goes up to 16GB (or even 24GB in some regions). The S24 Ultra comes with 12GB across the board. More RAM means more apps stay open in the background without reloading.

Battery and Charging

This is where OnePlus lands a knockout punch.

  1. Capacity: The OnePlus 12 has a massive 5,400 mAh battery, compared to Samsung’s standard 5,000 mAh. Reviewers consistently report the OnePlus 12 lasting longer on a single charge.
  2. Charging Speed: The OnePlus 12 supports 80W wired charging (in the US) or 100W globally. You can go from 1% to 100% in about 30 minutes. It also supports 50W wireless charging (using their proprietary stand).
  3. Samsung’s Speed: The S24 Ultra is capped at 45W wired charging, which takes over an hour to fill the smaller battery.

Camera Systems: Zoom vs. Color

Samsung has long held the crown for the best zoom on a smartphone, and that remains true here.

Samsung Galaxy S24 Ultra:

  • Main: 200MP sensor.
  • Telephoto: 10MP (3x zoom) and 50MP (5x zoom).
  • Ultrawide: 12MP.
  • Superpower: The zoom capabilities are unmatched. You can take usable photos at 30x and even 100x. If you take photos of concerts, wildlife, or distant architecture, Samsung wins.

OnePlus 12:

  • Main: 50MP Sony LYT-808 sensor.
  • Telephoto: 64MP periscope (3x zoom).
  • Ultrawide: 48MP.
  • Superpower: The Hasselblad color calibration produces rich, natural colors. The portraits look stunning. While it caps out at usable digital zoom around 10x or 30x, the main camera quality rivals Samsung comfortably.

Software Support and Features

Samsung justifies its price tag with software longevity and features.

  • Updates: Samsung promises 7 years of Android OS and security updates. This means the S24 Ultra will theoretically be current until the 2030s. OnePlus offers 4 years of OS updates and 5 years of security patches.
  • AI: The S24 Ultra is heavily marketed around “Galaxy AI,” featuring tools like Circle to Search, Live Translate for phone calls, and Generative Edit for photos.
  • The S Pen: The Galaxy S24 Ultra houses a built-in stylus. If you draw, sign documents, or like navigating with a pen, there is no alternative. This is a unique feature OnePlus does not replicate.

Summary: Is the Trade-off Worth It?

The decision comes down to three specific features: The S Pen, extreme zoom, and update longevity.

Buy the Samsung Galaxy S24 Ultra ($1,299) if:

  • You need the S Pen for productivity.
  • You want the flat screen with anti-reflective glass.
  • You engage in photography that requires long-distance zoom (10x to 100x).
  • You plan to keep the same phone for more than 5 years.

Buy the OnePlus 12 ($799) if:

  • You want to save $500 without sacrificing speed or screen quality.
  • Battery life and ultra-fast charging are your top priorities.
  • You prefer a slightly lighter phone with curved edges.
  • You are happy with a 3x zoom camera that still takes excellent standard photos.

Frequently Asked Questions

Does the OnePlus 12 have wireless charging? Yes. After removing it in the OnePlus 11, the company brought it back for the OnePlus 12. It supports up to 50W wireless charging if you use the proprietary AIRVOOC charger, or standard 15W Qi charging on generic pads.

Is the S24 Ultra camera significantly better than the OnePlus 12? For general daily photos, no. In blind camera tests, many users prefer the OnePlus 12’s color science. However, for zoom photography (anything beyond 10x) and video stabilization, the S24 Ultra is significantly better.

Does the OnePlus 12 work on all US carriers? Generally, yes. The OnePlus 12 is sold unlocked and works well on T-Mobile, Verizon, and AT&T 5G networks. However, you should always check the specific bands for your carrier, as Samsung typically has broader carrier optimization in the US market.