Samsung S25 Ultra vs OnePlus 15: Amazon’s Great Indian Festival 2026 is set to begin on October 8 with massive discounts on smartphones and electronics. With a few hours left before the sale goes live, the platform earlier revealed the “greatest deal of the year” on the Samsung Galaxy S25 Ultra 5G. The phone will drop to under Rs 85,000 in the sale.
In this price range, the handset will compete with the OnePlus 15, which will drop to Rs 81,999 in the GIF sale. If you plan to buy either of these smartphones, here is a comparison of their specifications, prices and which one you should pick based on your priorities.
Display: Boasting a titanium frame, the S25 Ultra has a 6.9-inch QHD+ Dynamic AMOLED 2X 120Hz screen protected by Corning Gorilla Armour 2 with up to 2,600nits peak brightness and an anti-reflective coating. In comparison, the OnePlus 15 gets a 6.78-inch FHD+ AMOLED LTPO 165Hz screen with up to 1,800nits HBM brightness and Gorilla Glass Victus 2 protection.
Performance: Samsung’s S25 Ultra runs on a Snapdragon 8 Elite CPU. The OnePlus’ offering also runs on the Snapdragon 8 Elite Gen 5 chipset. While both phones get Qualcomm’s flagship chipsets, the OnePlus offers a newer iteration with overall improvements in gaming and multitasking.
Software: The S25 Ultra launched with One UI 7 with Android 15 and a host of Galaxy AI features. Out of the box, the OnePlus 15 runs on OxygenOS 16 based on Android 16. For comparison, Samsung offers longer software support and a range of AI features in its OS.
Battery: Samsung’s Ultra phone houses a 5,000mAh battery with 45W wired and 15W wireless charging. For comparison, the OnePlus 15 gets a 7,300mAh cell that supports 120W wired and 50W wireless charging. In the battery department, OnePlus has a notable edge over the S25 Ultra.
Camera: For photography, the S25 Ultra boasts a 200MP primary + 50MP ultrawide + 50MP 5x periscope + 10MP 3x telephoto rear cameras and a 12MP selfie shooter. OnePlus 15 gets a 50MP OIS main + 50MP ultrawide + 50MP 3.5x telephoto OIS lens on the back and a 32MP selfie shooter.
On Samsung India’s official website, the S25 Ultra starts at Rs 1,19,999. Meanwhile, the OnePlus 15 starts at Rs 85,999 on OnePlus India’s site. In the upcoming Great Indian Festival sale, the S25 Ultra and OnePlus 15 will drop to Rs 84,999 and Rs 81,999 after offers, respectively. The massive price drop on the Ultra has raised confusion about which phone to buy under Rs 85,000.
To clear the dust, Samsung can be a better deal for people planning to buy a flagship with a bigger screen, longer software support and telephoto photography, while OnePlus 15 can be a solid pick for customers who prioritise gaming and performance and want longer battery life.