OnePlus 15 vs. Samsung Galaxy S25 Ultra: A Comparative Overview

Extended summary

Published: 17.11.2025

Introduction

The launch of the OnePlus 15 has stirred excitement in the smartphone market, especially as it positions itself against the established Samsung Galaxy S25 Ultra. Priced more affordably, the OnePlus 15 boasts impressive features including a robust display, a powerful processor, and a substantial battery. This article compares the two flagship models to help potential buyers determine which device best meets their needs.

Why Choose the OnePlus 15?

Durability

The OnePlus 15 offers superior durability with its IP68 and IP69 ratings for dust and water resistance. In contrast, the Galaxy S25 Ultra is rated IP68, which is suitable for water immersion but not for extreme conditions like high-temperature water jets. This enhanced durability is particularly beneficial for everyday scenarios, allowing users to interact with the OnePlus 15's screen even when it is wet, a significant advantage for those who frequently use their phones in humid environments.

Battery Life

Another compelling reason to consider the OnePlus 15 is its impressive 7,300mAh battery, which features a higher silicon content in its anode, enhancing energy density. This battery capacity significantly outperforms the Galaxy S25 Ultra’s 5,000mAh battery. Users have reported that the OnePlus 15 can last through a full day of heavy use, often retaining a substantial charge by the evening. Additionally, it supports faster charging at 80W compared to Samsung's 45W, making it a practical choice for those needing quick top-ups throughout the day.

Cost-Effectiveness

With a starting price of $899, the OnePlus 15 is notably more budget-friendly than the Galaxy S25 Ultra, which starts at $1,299. This price difference makes the OnePlus 15 an attractive option for consumers looking for high performance without the premium price tag, especially gamers seeking a powerful device without overspending.

Why Opt for the Samsung Galaxy S25 Ultra?

Display Quality

The Samsung Galaxy S25 Ultra is renowned for its exceptional display quality, featuring a QHD AMOLED screen with a peak brightness of 2600 nits. This display is enhanced with an anti-reflective coating that improves visibility in various lighting conditions, making it an excellent choice for media consumption. In comparison, while the OnePlus 15 has a bright display, it does not match the visual fidelity and usability of the Galaxy S25 Ultra's screen.

S Pen Functionality

The inclusion of the S Pen stylus is another unique feature of the Galaxy S25 Ultra, catering to users who appreciate the ability to take notes or sketch directly on their device. This functionality is not available on the OnePlus 15, making the Samsung model more appealing for professionals or creatives who utilize stylus features.

Software Support

Samsung offers extensive software support with up to seven years of OS and security updates for the Galaxy S25 Ultra, compared to the four years of OS updates and five years of security support from OnePlus. This longevity can be a significant factor for consumers looking for a device that will remain current for a longer period.

Conclusion

In summary, the choice between the OnePlus 15 and the Samsung Galaxy S25 Ultra ultimately depends on individual preferences and requirements. The OnePlus 15 stands out with its durability, battery life, and affordability, making it a strong contender for users who prioritize these features. On the other hand, the Galaxy S25 Ultra excels in display quality, stylus functionality, and long-term software support, appealing to those who value these aspects. As smartphone technology continues to evolve, these flagship models represent the competitive landscape of Android devices, each catering to different segments of the market.

Source: ZDNet

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