Compare vivo X300 vs vivo iQOO 15 Ultra

vivo X300
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vivo iQOO 15 Ultra
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  vivo X300 vivo iQOO 15 Ultra
Launch
Version October 2025 February 2026
Network
Technology - 5G
Body
Dimensions 150.6 x 71.9 x 8 mm (5.93 x 2.83 x 0.31 in) 163.7 x 76.8 x 8.7 mm (6.44 x 3.02 x 0.34 in)
Weight 190 g (6.70 oz) 227 g (8.01 oz)
SIM Nano-SIM + Nano-SIM + eSIM (max 2 at a time) Nano-SIM + Nano-SIM
Design Glass front, aluminum alloy frame, glass back -
Others IP68/IP69 dust tight and water resistant IP68/IP69 dust tight and water resistant, Pressure sensitive zones, Built-in cooling fan
Display
Type LTPO AMOLED, 1B colors, 120Hz, HDR10+, HDR Vivid AMOLED, 1B colors, 144Hz, Dolby Vision, HDR10+, HDR Vivid
Size 6.31 inches 6.85 inches
Resolution 1216 x 2640 pixels 1440 x 3168 pixels
Various Ultra HDR image support -
Platform
Operating System Android 16, Funtouch 16 Android 16, OriginOS 6
Chipset Mediatek Dimensity 9500 (3 nm) Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm)
CPU Octa-core (1x4.21 GHz C1-Ultra & 3x3.5 GHz C1-Premium & 4x2.7 GHz C1-Pro) Octa-core (2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)
GPU Arm G1-Ultra Adreno 840
Memory
Card Slot No No
Internal 256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM 256GB 16GB RAM, 512GB 16GB RAM, 1TB 16GB RAM, 1TB 24GB RAM
Camera
Primary 200 MP, f/1.7, (wide), OIS + 50 MP, (periscope telephoto), OIS, 3x optical zoom + 50 MP, 119˚ (ultrawide) 50 MP, f/1.9, (wide), OIS + 50 MP, f/2.7, (periscope telephoto), 3x optical zoom + 50 MP, f/2.1, 107˚ (ultrawide)
Features Laser AF, Zeiss optics, Zeiss T* lens coating, LED flash, panorama, HDR, 3D LUT import LED flash, HDR, panorama
Video 4K@120fps, 1080p@240fps 8K@30fps, 4K@60fps, 1080p@240fps
Selfie 50 MP 4K@60fps, 1080p@60fps 32 MP 4K@60fps, 1080p@60fps
Sound
Loudspeaker Yes, with stereo speakers Yes, with stereo speakers (with Dolby Atmos)
3.5mm Jack No No
Comms
Wifi a/b/g/n/ac/6/7, dual-band a/b/g/n/ac/6/7, dual-band
Bluetooth 5.4 5.4
GPS Yes Yes
NFC Yes Yes
Infrared Yes Yes
Radio No No
USB USB Type-C 3.2 USB Type-C 3.2
Features
Sensors Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass
Battery
Battery type 6040 mAh 7400 mAh
Charging 90W wired, 40W wireless, Reverse wired 100W wired, 40W wireless
Misc
Colors Black, Blue, Red, Purple, Pink Black, Silver
Models V2509A V2546A
Price 550 USD 740 USD
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