The Samsung Galaxy S25 Plus and OnePlus 15 trade different strengths: the S25 Plus has the higher listed screen resolution and a lighter, thinner body, while the OnePlus 15 lists a faster-refresh display, larger battery and higher charging rates. Camera specifications also differ, but the available figures do not establish which phone takes better photos. Prices depend on market and configuration, so the listed India prices are not a like-for-like comparison.
Samsung Galaxy S25 Plus vs OnePlus 15: specs comparison
The figures below come from Smartprix’s India comparison of the OnePlus 15 5G 16GB RAM + 512GB variant and the Galaxy S25 Plus. Smartprix says its details were last updated September 3, 2026. Specifications and availability can vary by region.
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| Specification | Samsung Galaxy S25 Plus | OnePlus 15 |
|---|---|---|
| Display | 6.7 inches; 1440 × 3120; 120 Hz | 6.78 inches; 1272 × 2772; 165 Hz |
| Rear cameras | 50 MP main; 10 MP telephoto with 3× optical zoom; 12 MP ultrawide | 50 MP main; 50 MP telephoto with 3.5× optical zoom; 50 MP ultrawide |
| Battery capacity | 4900 mAh | 7300 mAh |
| Charging | 45 W wired; 15 W wireless | 120 W wired; 50 W wireless |
| Weight and thickness | 190 g; 7.3 mm | 211 g; 8.1 mm |
| Software in comparison listing | Android 15; One UI 7; seven years of major OS and security updates | Android 16; OxygenOS 16 |
Source: Smartprix comparison. The listed update duration is for Samsung; the comparison does not establish a comparable OnePlus update commitment.
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Which display matters more: resolution or refresh rate?
The Galaxy S25 Plus has the higher listed resolution at 1440 × 3120, compared with 1272 × 2772 for the OnePlus 15. That gives Samsung the specification advantage if you prioritize pixel detail. The OnePlus 15’s listed maximum refresh rate is 165 Hz, higher than the S25 Plus’s 120 Hz. A higher refresh rate can make supported motion appear smoother, but the listing alone does not establish how either screen behaves in every app or use condition.
#1 Best Overall
- MULTIPLE TASKS WITH ONE ASK: Streamline your day with an assistant that gets you. Ask it to Google search for a pet-friendly vegan restaurant nearby and text it to your friend— your Galaxy S25+ handles multiple tasks with a single ask.¹
- START THE DAY SMARTER: Stay one step ahead with a phone that gives you the info you need before you even know you need it with Now Brief.²
- REDUCE THE NOISE. REVEAL THE MAGIC: AI Camera with Audio Eraser lets you capture vibrant videos in low light and minimize unwanted noises so you can relive your favorite moments with fewer distractions.³
- BRING OUT THE BEST IN EVERY FACE: Capture every portrait with clarity and confidence on the Galaxy S25+ Series. The advanced portrait features adjust skin tones and preserve natural textures, giving every shot a polished, professional look.
- MORE POWER TO YOU: Reimagine what’s possible with the Galaxy S25+, featuring our most powerful processor yet. Effortlessly translate your calls, slow down a video, or edit your photos without skipping a beat.
How do the cameras compare?
Both listings show a 50 MP main camera. The OnePlus 15 listing gives it 50 MP telephoto and ultrawide cameras, while the S25 Plus lists a 10 MP telephoto with 3× optical zoom and a 12 MP ultrawide. The listed optical zoom is 3.5× for OnePlus and 3× for Samsung.
These are hardware specifications, not a photo-quality verdict. Megapixel counts and zoom figures do not by themselves show which phone produces better images; the available comparison contains no controlled camera test.
Rank #2
- 6.7‑inch Dynamic AMOLED 2X QHD+ display (3120 × 1440) with adaptive 1‑120 Hz refresh rate, HDR support, and up to ~2600 nits peak brightness — providing a large, sharp, and very bright screen.
Battery capacity and charging: what the figures tell you
The OnePlus 15 is listed with a 7300 mAh battery, versus 4900 mAh for the Galaxy S25 Plus. Its listed charging rates are also higher: 120 W wired and 50 W wireless, compared with Samsung’s 45 W wired and 15 W wireless. These figures favor OnePlus on paper for capacity and charging specifications, but they do not predict a particular user’s runtime or charging experience. No controlled battery-life test is available in this comparison.
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Weight and thickness
The S25 Plus is listed at 190 g and 7.3 mm thick; the OnePlus 15 is 211 g and 8.1 mm thick. Samsung’s listed dimensions make it the lighter and thinner option, a distinction worth considering if handset weight or pocketability is a priority.
Rank #3
- 6.7‑inch Dynamic AMOLED 2X QHD+ display (3120 × 1440) with adaptive 1‑120 Hz refresh rate, HDR support, and up to ~2600 nits peak brightness — providing a large, sharp, and very bright screen.
Software and update support
The comparison lists the S25 Plus with Android 15 and One UI 7, alongside seven years of major OS and security updates. It lists the OnePlus 15 with Android 16 and OxygenOS 16, but does not provide a verified comparable update duration for OnePlus. The software versions and support details can vary with region and over time, so check the local manufacturer specification and support pages before buying.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Price difference: India listings and US starting price
Smartprix displayed ₹79,999 for the Galaxy S25 Plus and ₹93,999 for the OnePlus 15 5G 16GB RAM + 512GB. The displayed difference is ₹14,000, with the OnePlus listing higher. These are reported India listings from a page last updated September 3, 2026, not guaranteed checkout prices. The Samsung storage variant in the comparison header is not matched to the OnePlus 16GB/512GB configuration, so the figures should not be treated as a strictly like-for-like price comparison.
Rank #4
- 6.7‑inch Dynamic AMOLED 2X QHD+ display (3120 × 1440) with adaptive 1‑120 Hz refresh rate, HDR support, and up to ~2600 nits peak brightness — providing a large, sharp, and very bright screen.
For the US market, OnePlus’s product page lists the OnePlus 15 from $999.99. That is a starting price, not a matched configuration comparison with a Samsung US price. Confirm current local pricing and exact storage variants before comparing offers.
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Quick Recap
Best Value
- 6.7‑inch Dynamic AMOLED 2X QHD+ display (3120 × 1440) with adaptive 1‑120 Hz refresh rate, HDR support, and up to ~2600 nits peak brightness — providing a large, sharp, and very bright screen.
Which one should you buy?
- Choose the Galaxy S25 Plus if higher listed display resolution, lower listed weight and thickness, or the stated seven-year Samsung update period matter most.
- Consider the OnePlus 15 if a higher listed maximum refresh rate, larger battery capacity, higher charging rates, or higher listed telephoto and ultrawide megapixel counts better match your priorities.
- Compare actual local prices only after matching storage configuration and market. The India listings above do not establish an equal-configuration price gap.
- Do not use these specifications alone to decide which phone is faster, lasts longer in real use, or takes better photos; those outcomes require comparable testing.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
