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Motorola - Razr 50 vs Xiaomi 15 Ultra

Last updated · How Mars Score works
Razr 50MOTOROLARENDER
Probe A
Motorola
Razr 50
60.2/ 100C
Performance49· 25%
Battery53· 20%
Display72· 18%
Cameras70· 18%
Design· 8%
Connectivity· 7%
Operating System· 4%
Xiaomi 15 UltraXIAOMIRENDER
Probe B
Xiaomi
Xiaomi 15 Ultra
73.8/ 100B
Performance79· 25%
Battery74· 20%
Display70· 18%
Cameras70· 18%
Design· 8%
Connectivity· 7%
Operating System· 4%
Quick verdict

Between the Razr 50 and Xiaomi 15 Ultra, the Razr 50 comes out ahead in weight and screen size, while the Xiaomi 15 Ultra wins on wireless charging and wired charging. Overall, the Razr 50 scores 60.2 and the Xiaomi 15 Ultra scores 73.8 on our Mars Score.

Buying advice

Which should you buy?

The Xiaomi 15 Ultra is the clear pick on raw spec strength, leading by 13.6 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.

Pick the Razr 50 if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are weight, screen size, water resistance.

Pick the Xiaomi 15 Ultra if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. Its strongest claims are wireless charging, wired charging, antutu, among others.

Both ship with comparable main camera, refresh rate, 5g support, so those specs don't separate the two — focus on the differences below.

Bottom line: the Xiaomi 15 Ultra is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.

Why Motorola - Razr 50 wins

  • Weight — 41.00 g less. 188 vs 229.
  • Screen size — 2.53% more. 6.9 " vs 6.73 ".
  • Water resistance: IPX8 (vs IP68).

Why Xiaomi 15 Ultra wins

  • Wireless charging — 433.33% more. 80 W vs 15 W.
  • Wired charging — 260.00% more. 90 W vs 25 W.
  • AnTuTu — 248.72% more. 2720000 vs 780000.
  • RAM — 100.00% more. 16 GB vs 8 GB.
  • Battery capacity — 42.86% more. 6000 mAh vs 4200 mAh.
  • Pixel density — 26.39% more. 522 ppi vs 413 ppi.
  • Promised OS updates: 4 (vs 3).
Full readout

Spec comparison

Design

SpecMotorola - Razr 50Xiaomi 15 Ultra
Weight188 glead229 g
Thickness7.3 mmlead9.4 mm
Water resistanceIPX8leadIP68
Form factorfoldable_clamshellleadbar

Display

SpecMotorola - Razr 50Xiaomi 15 Ultra
Screen size6.9 "lead6.73 "
Pixel density413 ppi522 ppilead
Refresh rate120 Hz120 Hz
Peak brightness3000 nits3200 nitslead

Performance

SpecMotorola - Razr 50Xiaomi 15 Ultra
RAM8 GB16 GBlead
Storage256 GB512 GBlead
AnTuTu7800002720000lead
CPU total clock9.6 GHz22.8 GHzlead

Cameras

SpecMotorola - Razr 50Xiaomi 15 Ultra
Main camera50 MP50 MP
Front camera32 MP32 MP
Optical image stabilizationtruetrue

Battery

SpecMotorola - Razr 50Xiaomi 15 Ultra
Battery capacity4200 mAh6000 mAhlead
Wired charging25 W90 Wlead
Wireless charging15 W80 Wlead

Connectivity

SpecMotorola - Razr 50Xiaomi 15 Ultra
5G supporttruetrue
Headphone jackfalsefalse
microSD slotfalsefalse

Operating System

SpecMotorola - Razr 50Xiaomi 15 Ultra
OSAndroidAndroid
Promised OS updates3 years4 yearslead
Reader questions

Frequently asked

Which has better battery, Razr 50 or Xiaomi 15 Ultra?+

Xiaomi 15 Ultra has 42.9% more battery — 4200 mAh vs 6000 mAh.

Which is lighter, Razr 50 or Xiaomi 15 Ultra?+

Razr 50 is 41g lighter — 188g vs 229g.

Is Razr 50 waterproof?+

Razr 50 has an IPX8 rating.

Does Xiaomi 15 Ultra support 5G?+

Yes, Xiaomi 15 Ultra supports 5G.

Which has more RAM, Razr 50 or Xiaomi 15 Ultra?+

Xiaomi 15 Ultra offers 16GB of RAM.

Which has a better camera, Razr 50 or Xiaomi 15 Ultra?+

Xiaomi 15 Ultra has a 50 MP main camera vs 50 MP.

Drill down

Spec-level deep dives

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