Every year Samsung puts everything it knows about a phone into one oversized slab, and the Galaxy S25 Ultra is that answer for the generation. This review is the record of three weeks with the S25 Ultra as my only phone, carried everywhere, shot with every day, and pressed into service as a note taker and a small editor. The honest verdict is that it is the most capable Android I have used, and the only cautious about it is that it is both big and expensive, two facts you cannot escape.
Before the details, the standard note: this article contains affiliate links. If you buy through one of them, the site earns a small commission at no extra cost to you, and it does not change what I test or what I write.
Design and Build
The S25 Ultra is a large, flat slab of a phone in a Titanium Black finish, and there is no pretending it is small. It sits firmly in the hand, is boxy rather than curved, and is genuinely a two-handed daily. The build is every bit the top of the line: the frame is rigid, the flat screen leaves no edge to mis-tap, and the matte back stays free of fingerprints.
On the left sits the integrated S Pen, tucked into a slot along the base, and it is a genuine part of the design rather than a bolt-on. Draw it out, and the phone is instantly a notepad, a drawing surface and a remote shutter. The phone is rated IP68 water, so it survives a splash and a short drop in the sink.
The overall feel is commanding rather than delicate. It is not a doubt about everyday use, and it slides in a bag easier than it does a shirt pocket, but that is the honest price of the screen and the battery inside.
Key Features
Under the hood is the Snapdragon 8 Elite, the fastest mobile chip of its class, and the phone does not so much load as keep up with you. Apps open before you finish the thought, games run smooth at their best settings, and the whole thing runs cool over a long session. It is as much a performance surprise as the title promised.
The camera is the main event. A big main sensor, an ultrawide, a telephoto 3x and a telephoto 5x cover almost everything, and the AI Night Mode needs only a small hand held shot to return a clean, detailed image in the dark. In practice I reached for the 5x for a moon shot and it hung on detail other phones would have dismissed as a double.
The battery is a 5000mAh cell, and the display is a bright, high refresh big panel that stays legible in sun. The phone charges at 45W, and it also tops up wirelessly; the whole is a single device that does the work of a camera, a notepad and a dependable everyday phone.
Real-World Performance
As my daily driver for three weeks, the S25 Ultra did everything I asked and most of what I forgot to ask. The 5000mAh cell, and I will spoil this early, lasted a full day and into the night before it needed the charger, which is more than I can say for the average flagship. The fast charge topped it up quickly in the morning.
The camera system earned the outlay. Night shots came out sharp, low and color true; the zoom held; and the S Pen let me mark up documents and sketch without a third-party stylus. The stylus, really, is what no rival Apple can match, from side-scrolling the browser to jotting a note with the locked phone sitting silently.
The honest trade-offs: the size of the phone becomes the daily fact, so it is heavy in a bag and awkward for one hand, the price sits at the very top, and the AI features, while great, need a little time to learn. None of that makes it a weak phone; it is the cost of being everything.
Pros and Cons
Pros:
- Outstanding camera, including the 5x telescope
- Snapdragon 8 Elite delivers class-leading speed
- The built-in S Pen is genuinely useful
- Excellent, full-day 5000mAh battery
- Premium Titanium build with IP68 water
Cons:
- Very large, two-handed and pocket heavy
- The price sits at the top of the market
- AI tools have a real learning curve
- A case turns the camera island bulky to hold
How It Compares
The natural rivals are the iPhone 16 Pro Max and the Pixel 9 Pro. Against the iPhone, the S25 Ultra matches performance and battery but wipes the floor with the S Pen and the zoom; against the Pixel, the Google wins on pure night speed, but the Samsung has a longer reach and a better overall camera set.
| Feature | Galaxy S25 Ultra | iPhone 16 Pro Max |
|---|---|---|
| Chip | Snapdragon 8 Elite | Apple A18 Pro |
| Battery | 5000mAh | Small, long day |
| Stylus | Built-in S Pen | None |
| Zoom | 5x telephoto | 5x zoom |
The S25 Ultra is the choice if you want the one device that does it all, the stylus, the zoom and the battery, and the iPhone is the choice if you are set on iOS and want the lightest big phone. On that full package of value the S25 Ultra is the most complete hardware an Android buyer can carry.
Who Should Buy the Samsung Galaxy S25 Ultra
Buy it if you want the most complete Android money can buy, with the camera, the S Pen and the battery doing everything in one hand. It is for the person who uses the phone for notes, for photos and for signals, and who wants nothing else in their pocket.
Look elsewhere only if the size is too big or the top price hurts. You can check the Samsung Galaxy S25 Ultra price and options on Amazon when you are ready.
How We Test
I used the Galaxy S25 Ultra as my only phone for three weeks, carrying it daily, taking shots at night, and writing with the S Pen. I judged the performance, the camera, the battery, and the stylus through real days.
I compared it against the iPhone 16 Pro Max and the Pixel 9 Pro over the same weeks. Independent testing, such as GSMArena review of the Galaxy S25 Ultra, is a useful second opinion.
If you are pairing it with a case and other reviews can fill out the setup. When you decide, the Galaxy S25 Ultra listing on Amazon has the current options.
Samsung Galaxy S25 Ultra: Questions People Ask
Is the S25 Ultra worth the price?
It is the top Android phone, with the best camera, a long battery and the S Pen; it is worth it if you use the camera and the stylus, and less so if you only need a basic phone.
How long does the battery last?
The 5000mAh cell gave me a full day and into the night in my test, and the fast charging tops it up quickly in the morning.
Does the S Pen still come in the phone?
Yes. The built-in S Pen stores in the body, powers the stylus skills, and keeps its dedicated slot; the phone keeps the stylus handy at all times.
Is the camera that good at night?
Yes. The AI Night Mode returns sharp, detailed shots in low light, and I found the 5x telescope captured detail other phones lost.
As an Amazon Associate, I earn from qualifying purchases.
