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InnoReviews

Nothing Phone (4a) vs Xiaomi 15 Ultra

Nothing Phone (4a)
57.6Inno Score
VS
WINNER
Xiaomi 15 Ultra

Xiaomi

Xiaomi 15 Ultra

$1,499

75.9Inno Score
40.4Performance79.1
69.8Display69.1
57.6Camera73.2
67.4Battery79
65.3Features78.7
5 spec wins — Nothing Phone (4a)14 spec wins — Xiaomi 15 Ultra

InnoReviews verdict

Xiaomi 15 Ultra wins this phone face-off, 75.9 to 57.6, pulling ahead mainly in performance (+39) and camera (+16). Nothing Phone (4a) still makes sense if its price or standout specs fit your needs better.

Which would you pick?

Key differences

Reasons to pick the Nothing Phone (4a)

  • 41% higher Peak brightness: 4,500 nits vs 3,200 nits
  • 13% higher Active use endurance: 13.6 h vs 12 h

Reasons to pick the Xiaomi 15 Ultra

  • Stronger performance score: 79 vs 40
  • Stronger camera score: 73 vs 58
  • Stronger battery score: 79 vs 67
  • Stronger features score: 79 vs 65
  • 525% higher ultra-wide: 50 MP vs 8 MP

Display

Display comparison: Nothing Phone (4a) versus Xiaomi 15 Ultra
SpecNothing Phone (4a)Xiaomi 15 Ultra
Screen size6.78 ″+1%6.73 ″
Panel typeAMOLEDLTPO AMOLED
Resolution1224x27201440x3200
Pixel density440 ppi522 ppi+19%
Refresh rate120 Hz120 Hz
Peak brightness4,500 nits+41%3,200 nits
Screen-to-body87.2 %90 %+3%

Performance

Performance comparison: Nothing Phone (4a) versus Xiaomi 15 Ultra
SpecNothing Phone (4a)Xiaomi 15 Ultra
ChipsetSnapdragon 7s Gen 4Snapdragon 8 Elite
AnTuTu1,183,7752,650,000+124%
Geekbench 6 (single)1,279Bottom 50%3,050+138%Top 12%
Geekbench 6 (multi)3,374Bottom 47%9,600+185%Top 11%
Wild Life Extreme stability99 %Top 23%—
RAM (max)12 GB16 GB+33%
Storage options128GB/256GB256/512GB/1TB
Storage typeUFS 3.1UFS 4.1

Camera

Camera comparison: Nothing Phone (4a) versus Xiaomi 15 Ultra
SpecNothing Phone (4a)Xiaomi 15 Ultra
Main camera50 MP50 MP
Main aperturef/1.9f/1.63
Ultra-wide8 MP50 MP+525%
Telephoto50 MP200 MP+300%
Optical zoom3.5 x4.3 x+23%
Max video4K@30fps8K@30fps
Front camera32 MP32 MP
OISYesYes

Battery

Battery comparison: Nothing Phone (4a) versus Xiaomi 15 Ultra
SpecNothing Phone (4a)Xiaomi 15 Ultra
Capacity5,080 mAh5,410 mAh+6%
Wired charging50 W90 W+80%
Wireless charging0 W80 W
Active use endurance13.6 h+13%12 h

Design

Design comparison: Nothing Phone (4a) versus Xiaomi 15 Ultra
SpecNothing Phone (4a)Xiaomi 15 Ultra
Weight205 g+9%226 g
Thickness8.6 mm+8%9.4 mm
IP ratingIP64IP68
Frame materialPlasticAluminum

Connectivity

Connectivity comparison: Nothing Phone (4a) versus Xiaomi 15 Ultra
SpecNothing Phone (4a)Xiaomi 15 Ultra
5GYesYes
Wi-FiWi-Fi 6Wi-Fi 7
Bluetooth5.46.0
NFCYesYes
USBUSB-C 2.0USB-C 3.2
eSIMNoYes

Software

Software comparison: Nothing Phone (4a) versus Xiaomi 15 Ultra
SpecNothing Phone (4a)Xiaomi 15 Ultra
OS at launchAndroid 16 (Nothing OS 4.1)Android 15 (HyperOS 2)
OS update pledge3 years4 years+33%

Audio

Audio comparison: Nothing Phone (4a) versus Xiaomi 15 Ultra
SpecNothing Phone (4a)Xiaomi 15 Ultra
Stereo speakersYesYes
3.5mm jackNoNo

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