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OnePlus ended last year on a high note. The OnePlus 15 arrived earlier than expected, and it took on heavyweights like the Samsung Galaxy S25 Ultra without costing a thousand dollars (unless you configure it with more storage and RAM). The phone offered a compelling spec package, including a big, bright display, the latest Qualcomm flagship processor, a huge battery, and more.
Now that the dust has settled, should anyone buy the Galaxy S25 Ultra in today's market? It turns out, there are still several reasons to spring for Samsung's flagship, even if OnePlus is the new hotness, and an S26 Ultra is on the horizon.
Also: Thousands of readers bought these phones last year, but none of us expected no. 1
If you are undecided between the two phones or just want to compare the latest OnePlus 15 to the Galaxy S25 Ultra, you're in the right place. I compared the two flagships below, and here's the one that'll better suit your needs.
You should buy the OnePlus 15 if…
Prakhar Khanna/ZDNET
1. You want a more durable phone
The OnePlus 15 is IP68 and IP69 rated for dust and water resistance, whereas the Galaxy S25 Ultra is IP68 rated. For the unaware, IP68 is for submersion, while the latter is for water jets at temperatures up to 80°C, ensuring the device can withstand even more extreme conditions. These are more important in day-to-day use, thanks to a screen that can withstand water droplets.
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