Samsung Galaxy S25 vs. iPhone 15: Design and Display
The back of the Samsung Galaxy S25 Ultra.
Andy Boxall/Digital Trends
While each new generation of phones has some subtle changes in design, both the Samsung Galaxy S25 and iPhone 15 retain the same design elements as previous generations. The S25 is slightly lighter than the S24, but only by a few grams. Even the rear camera setup is almost identical.
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The displays are also very similar, with the S25 sporting a 6.2-inch screen and the iPhone 15 sporting a 6.1-inch screen. Despite the smaller screen, the iPhone 15 has a higher resolution and a higher pixel density, but the S25 beats it in refresh rate and brightness. The iPhone 15 has Apple’s Dynamic Island feature, but the Galaxy S25 has a similar feature in the Now Bar.
The Galaxy S25 comes with 12GB RAM and up to 512GB storage, while the iPhone 15 comes with up to 6GB RAM and 512GB storage. The S25’s Snapdragon 8 Elite processor will be a lot faster than the iPhone 15’s A16 Bionic chip, but that will mostly depend on benchmarks. Real-world performance may not show such a big gap in how the devices feel.
Samsung Galaxy S25 vs. iPhone 15: Battery and Charging
The Galaxy S25 comes with a 4,000mAh Samsung Galaxy S25 Battery
. Samsung hasn’t provided an estimate for this battery life in hours, but the Galaxy S24 also comes with a 4,000mAh Samsung Galaxy S24 battery
. We saw about a day of battery life with moderate to heavy use, and we expect the Samsung Galaxy S25 Battery
to last about the same. It may even perform slightly better given the newer hardware and better power efficiency.
The iPhone 15 comes with a 3,349mAh iPhone 15 battery
. In this case, the winner is clear, especially since the S25 needs a little extra juice to keep its AI features running. The iPhone 15, on the other hand, has been plagued by battery life issues that have been experienced by many different users. While the
iPhone 15 battery
estimates a maximum life of around 20 hours, in real-world conditions, it lasted closer to 11 hours.
Samsung Galaxy S25 vs. iPhone 15: Artificial Intelligence
The iPhone 15 Pro Max with its back facing up, showing the home screen.
Joe Maring/Digital Trends
Artificial intelligence is the next great frontier in technology, and there are already quite a few companies entering the space. ChatGPT, Perplexity, and Gemini are all working with mobile assistants to make your phone more useful than before — but with limitations.
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Samsung Galaxy S25 vs. iPhone 15: Comparison
Both phones are great choices, but ultimately, from a purely technical perspective, it’s hard to recommend anything other than the Galaxy S25. If you use an iPad and Mac every day, then an iPhone might be a better fit for you (because it fits the ecosystem really well), but only if you use those integrations.
If you want a powerful, more modern phone, the Galaxy S25 is your best choice. It’s also ready for the next seven years thanks to software and security updates, so you won’t have to think about upgrading for a long time to come.
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