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Phones · head to head

15 vs X300 Ultra

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iQOO

15

₹84,999 2 sellers
4 spec wins
Higher score

vivo

X300 Ultra

₹1,59,999
5 spec wins

Quick verdict

  • X300 Ultra is better for camera.
  • X300 Ultra is better for gaming and speed.
  • 15 is better for light and compact.
  • 15 leads on display.
  • X300 Ultra leads on performance.
  • 15 offers better overall value (6.5 points per ₹10,000).
  • X300 Ultra has the higher Comparezi Score (76.7).
  • 15 is the cheaper option at ₹84,999.

Computed from stored specifications, the published phones scoring rules and recorded prices. Not an opinion.

Winners by area

Display 15
Performance X300 Ultra
Camera X300 Ultra
Battery 15
Build 15
Value 15

Specifications side by side

Spec
15
X300 Ultra
Display
Display size
6.85" (better)
6.82"
Display type
AMOLED
AMOLED
Resolution
3168 x 1440
3168 x 1440
Refresh rate
144 Hz
144 Hz
Peak brightness
6,000 nits (better)
4,500 nits
Brightness measured as
Local peak, small bright area
Local peak, small bright area
Performance
Processor
Snapdragon 8 Elite Gen 5
Snapdragon 8 Elite Gen 5
Chipset process
3 nm
3 nm
RAM
12 GB
16 GB (better)
Storage
256 GB
512 GB (better)
Memory options
12 GB + 256 GB, 16 GB + 512 GB
16 GB + 512 GB
Camera
Main camera
50 MP
200 MP (better)
Ultra-wide camera
50 MP
50 MP
Telephoto camera
50 MP
200 MP (better)
Front camera
32 MP
50 MP (better)
Battery
Battery
7,000 mAh (better)
6,600 mAh
Charging speed
100 W
100 W
Wireless charging
Yes
Yes
Software
Operating system
Android
Android
Software
Android 16, OriginOS 6
Android 16, OriginOS 6
OS updates promised
—
5
OS updates counted in
—
Upgrades
Security updates promised
—
7 years
Build
Weight
216.2 g (better)
232 g
5G
Yes
Yes
Water resistance
IP68 + IP69
IP68 + IP69
SIM
Dual SIM (Dual Nano)
Dual SIM (2 nano SIMs)
Colours
Legend, Alpha, Apex
Eclipse Black, Victory Green

A tick marks the better value where the category rules say higher (or lower) is better. Text values are shown without a winner. Ties have no winner.

Price and availability

Store links are not paid: prices are copied from each store's own page with the date checked, and Comparezi earns only from labelled ads. How we earn

15

₹84,999 2 sellers

X300 Ultra

₹1,59,999

Pros and cons

15

  • Pro: 100 W wired charging, faster than 94 % of the 338 phones on Comparezi with a published figure
  • Pro: Dedicated 50 MP telephoto camera
  • Pro: Wireless charging
  • Pro: IP68 + IP69 dust and water resistance
  • Con: Heavier than most phones on Comparezi (216.2 g)
  • Con: No published update policy

X300 Ultra

  • Pro: 100 W wired charging, faster than 94 % of the 338 phones on Comparezi with a published figure
  • Pro: Dedicated 200 MP telephoto camera
  • Pro: 200 MP main camera, higher resolution than 95 % of the 368 phones on Comparezi with a published figure
  • Pro: Wireless charging
  • Pro: IP68 + IP69 dust and water resistance
  • Con: Heavier than most phones on Comparezi (232 g)

Which should you buy?

X300 Ultra if you want the strongest overall specification: it has the higher Comparezi Score (76.7).

15 if price matters most: it is the cheaper option at ₹84,999 and gives the most score per rupee .

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