iQOO 15 Ultra vs Vivo X300 (16GB RAM + 512GB)
Quick Comparison
Both iQOO 15 Ultra and Vivo X300 (16GB RAM + 512GB) comes with same RAM. In terms of display resolution, iQOO 15 Ultra has better resolution of 3168 x 1440 than Vivo X300 (16GB RAM + 512GB) which has resolution of 2640 x 1216. Vivo X300 (16GB RAM + 512GB) has more internal memory than iQOO 15 Ultra
| Name | iQOO 15 Ultra | Vivo X300 (16GB RAM + 512GB) |
| RAM | 16 GB | 16 GB |
|---|---|---|
| Display | 6.85 in | 6.31 in |
| Internal Memory | 256 GB | 512 GB |
| Battery | 7400 mAh | 6040 mAh |
| Camera | 50 MP + 50 MP + 50 MP Triple | 200 MP + 50 MP + 50 MP Triple |
| Price | Rs. 99990 | Rs. 85999 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is February 04, 2026. The Expected cost of iQOO 15 Ultra is Rs. 99990. The launch Date of the second phone is December 02, 2025. The cost of Vivo X300 (16GB RAM + 512GB) is Rs. 85999.
Display comparison
Vivo X300 (16GB RAM + 512GB) has screen size of 6.31 inches which falls short to iQOO 15 Ultra's 6.85 inch screen. There is AMOLED Screen Type in both the phones. iQOO's phone has display density of 508 PPI & Vivo's phone has only 484 PPI display density. In terms of screen to body ratio, iQOO's phone has better screen to body ratio of ~ 90.7% than Vivo's phone ~ 86.7%. iQOO 15 Ultra has 19.8:9 aspect ratio where as Vivo X300 (16GB RAM + 512GB) has 20:9 aspect ratio.
Memory comparison
Both phones come with 16 GB RAM Vivo X300 (16GB RAM + 512GB) has more Internal Memory (512 GB) than iQOO 15 Ultra (256 GB).
Camera comparison
Vivo X300 (16GB RAM + 512GB)'s 200 MP + 50 MP + 50 MP Triple Rear Camera outshines iQOO 15 Ultra's 50 MP + 50 MP + 50 MP Triple Rear Camera in terms of resolution. Vivo X300 (16GB RAM + 512GB) will be better choice if you're looking to click lot of selfies as it has better 50 MP Front Camera in comparison to iQOO 15 Ultra's 32 MP Front Camera.
Technical comparison
Both the phones run on Android Operating System Version 16.
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Full Comparison
| Name | iQOO 15 Ultra | Vivo X300 (16GB RAM + 512GB) |
| General | ||
| Country of Origin | India | |
| Model | V2546A | X300 |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano-SIM + Nano-SIM + eSIM (max 2 at a time |
| Device Type | Smartphone | Smartphone |
| Release Date | February 04, 2026 | December 02, 2025 |
| Design | ||
| Dimensions | 76.8 x 163.7 x 8.7 mm | 71.9 x 150.6 x 8 mm |
| Weight | 227 g | 190 g |
| Bezel less | Yes | Yes |
| Colors | Black, Silver | Black, Blue, Red, Purple, Pink |
| Display | ||
| Type | Color AMOLED Screen (1B Colors) | Color AMOLED Screen (1B Colors) |
| Touch | Yes | Yes |
| Size | 6.85 inches, 1440 x 3168 pixels, 144 Hz | 6.31 inches, 1216 x 2640 pixels, 120 Hz |
| Aspect Ratio | 19.8:9 | 20:9 |
| PPI | ~ 508 PPI | ~ 484 PPI |
| Screen to Body Ratio | ~ 90.7% | ~ 86.7% |
| Brightness | 1000 nits (typ), 2600 nits (HBM), 8000 nits (peak) | |
| Features | PWM, Dolby Vision, HDR10+, HDR Vivid | 2160Hz PWM, HDR10+ |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Memory | ||
| RAM | 16 GB | 16 GB |
| Expandable RAM | Upto 12 GB Extra Virtual RAM | Upto 16 GB Extra Virtual RAM |
| Storage | 256 GB | 512 GB |
| Storage Type | UFS 4.1 | UFS 4 |
| Card Slot | No | |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Bluetooth | Yes, v5.4, A2DP, LE, aptX HD | Yes, v5.4, A2DP, LE, aptX HD |
| USB | Yes, USB-C v3.2 | Yes, USB-C v3.2 |
| USB Features | USB on-the-go, USB Charging | USB Tethering, USB on-the-go, USB Charging |
| IR Blaster | Yes | Yes |
| Extra | ||
| GPS | Yes, with GPS; GLONASS; GALILEO; BeiDou; NavIC; GNSS, QZSS | Yes, with GPS, BeiDou, GLONASS, Galileo, QZSS, NavIC, A-GPS, Cellular Positioning, Wi-Fi Positioning |
| Fingerprint Sensor | Yes, In Display | Yes, In Display |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Gyro, Proximity, Compass | Accelerometer, Gyro, Proximity, Compass |
| 3.5mm Headphone Jack | No | No |
| NFC | Yes | Yes |
| Water Resistance | Yes, 1.5 m upto 30 min | Yes, 1.5 m upto 30 min |
| IP Rating | IP68/IP69 | IP68 |
| Dust Resistant | Yes | Yes |
| Camera | ||
| Rear Camera | 50 MP ƒ/1.9 (Wide Angle) 23mm (wide), 1/1.56", 1.0µm, PDAF, OIS 50 MP ƒ/2.7 (Telephoto) 85mm (periscope telephoto), 1/1.95", 0.8µm, PDAF, OIS, 3x optical zoom 50 MP ƒ/2.1 (Ultra Wide) 15mm, 107˚ (ultrawide), 1/2.76", 0.64µm, AF | 200 MP ƒ/1.7 (Wide Angle) 1/1.4", 0.56µm, PDAF, OIS 50 MP ƒ/2.6 (Telephoto) 70mm (periscope telephoto), 1/1.95", PDAF, OIS, 3x optical zoom 50 MP ƒ/2 (Ultra Wide) 15mm, 119˚ (ultrawide), 1/2.76", 0.64µm, AF |
| OIS | Yes | Yes |
| Auto Focus | Yes | Yes |
| Features | HDR, panorama | Laser AF, Zeiss optics, Zeiss T lens Coating, Panorama, HDR, 3D LUT import |
| Video Recording | 8K @ 30 fps UHD, 4K @ 60 fps UHD, 1080p @ 60 fps FHD | 4K, 1080p |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 32 MP ƒ/2.2 (Wide Angle) Punch Hole | 50 MP ƒ/2 (Wide Angle) Punch Hole, Screen Flash |
| Front Video Recording | 4K @ 60 fps UHD, 1080p @ 60 fps FHD | 4K, 1080p |
| Technical | ||
| OS | Android v16 | Android v16 |
| Custom UI | Funtouch OS 17 | OriginOS 6 |
| Chipset | Qualcomm Snapdragon 8 Elite Gen 5 | Mediatek Dimensity 9500 |
| CPU | 4.6 GHz, Octa Core Processor | 4.21 GHz, Octa Core Processor |
| Core Details | 2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M | |
| GPU | Adreno 840 | Arm G1-Ultra |
| Java | No | No |
| Browser | Yes | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | AAC, OGG, FLAC, WMA, WAV, APE, MP3, MP1 | WAV, MP3, MP2, MIDI, Vorbis, APE, FLAC |
| Video | MP4, 3GP, AVI | MP4, 3GP, AVI, Video Recording: MP4 |
| FM Radio | No | No |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 7400 mAh, Si/C | 6040 mAh, Li-ion Battery |
| Fast Charging | Yes, 100W Fast Charging | Yes, 90W |
| Wireless Charging | Yes, 40W | Yes, 40W |
| Reverse Charging | Yes | Yes |