(Oppo) OnePlus 15 vs Xiaomi 15 Ultra
Verdict
(Oppo) OnePlus 15 and Xiaomi 15 Ultra tie on the OH Rank at a score of 77. (Oppo) OnePlus 15 wins on Performance and Battery; Xiaomi 15 Ultra wins on Screen and Main Camera. (Oppo) OnePlus 15 is 1.7mm wider than Xiaomi 15 Ultra. (Oppo) OnePlus 15 is the more recent release, from Oct 28, 2025.
Score Breakdown
Performance /15
Battery /15
Screen /15
IP Protection /15
Main Camera /15
Selfie /5
Video /5
SD Memory /5
Software /5
Desktop Replacement /5
TOTAL
77
77
(Oppo) OnePlus 15
76.7mm (3.02in) · Oct 28, 2025 · Rank #22
13+14+13+12+12+4+4+0+5+0 = 77
* TOP Battery Endurance* TOP Software
EDITORIAL: Oppo's OnePlus skipped 14 to bring us an iterative upgrade of excellent OnePlus 13. The 15 is a very competent and affordable flagship with excellent build and performance, amazing endurance and fast charging, good screen and reliable camera setup. It adds AF selfie and replaces the excellent 3-step alert slider with an AI button. Also gone is the Hasselblad collaboration and branding, in fact: all cameras have been downgraded. Is it possible that Oppo reserves top performance for it's Find series? Find 9 Pro and OnePlus 15 share very similar design...
PROs
improved design and build, great SD 8 Elite Gen 5 with UFS 4.1 performance. proper 48hr endurance from a 7300mAh Si-C battery with sub-50min 120W (50W wireless) charging. >1300nits bright 450ppi LTPO AMOLED screen with Dolby Vision, IP69 protection (down to 2m for 30min). reliable imaging from 50MP 24mm OIS main + 50MP 80mm OIS periscope telephoto + 50MP 16mm ultrawide (all with PDAF). good 32MP 21mm AF selfie. up to 4 years of updates of ColorOS (Chinese version of Oppo's OS).
CONs
76.7mm wide and hard to use one-hand, downgraded camera compared to OnePlus 13 and a loss of Hasselblad tech, no expandable memory and no desktop replacement functionality or even Video-Out
Xiaomi 15 Ultra
75mm (2.95in) · Feb 27, 2025 · Rank #24
11+11+15+12+15+3+5+0+5+0 = 77
FLY* TOP Screen* TOP Camera* TOP Video Recording
EDITORIAL: This year, one of the TOP 5 camera phones came with a significant battery endurance improvement. The main camera retained the 1" sensor, lost the variable aperture but the 2 zoom cameras are now better then ever. There is no AF on the selfie and like last year, there is an extra camera grip available for the ultimate photo & video creation. Still missing are SD memory card and the desktop replacement feature. Promised are 4 years of OS updates.
PROs
SnapDragon 8 Elite processor with UFS 4.1 fast overall performance, a 5410mAh Silicone Carbon battery (6000mAh in China) with a >30hr endurance, 90W wired or 80W wireless charging, >1500nits bright 500+ppi LTPO OLED screen with Dolby Vision, one of the best cameras on the market: 50MP 23mm main + 200MP 100mm tele + 50MP 70mm tele (all with PDAF & OIS) + 50MP 14mm PDAF ultrawide, great back camera recording, 4 years of OS updates
CONs
32MP 21mm selfie with no OIS or even AF, lack of expandable SDmemory storage (while offering 8k video recording) and a lack of desktop replacement software
Both phones here were scored by me, using the same ten categories, with no ads, sponsorships, or manufacturer relationships — this comparison is as objective and honest as it gets.
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