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Google Pixel 4a
Google Google Pixel 4a
2.3
Price TBA
View Details
Xiaomi 15 Ultra
Xiaomi Xiaomi 15 Ultra
512GB · 16GB RAM
4.3
From $1,099
View Details
★ Our Pick

Our Verdict

Analysis

Xiaomi 15 Ultra has the bigger display.

Overall Winner
Xiaomi 15 Ultra
Display Winner
Xiaomi 15 Ultra
Performance Winner
Tie
Camera Winner
Tie
Battery Winner
Tie
Value Winner
Tie

Specifications Comparison

Feature Google Pixel 4a Xiaomi 15 Ultra
Display size (in) 5.81 6.73
Charging (W) 18 90
Main camera (MP) 12.20 50.00
Selfie (MP) 8.00 32.00
Weight (g) 143 226
Thickness (mm) 8.20 9.35
Chipset Qualcomm SDM730 Snapdragon 730G (8 nm) Snapdragon 8 Elite
OS Android 10, upgradable to Android 13 Android 15, HyperOS 2

Pros & Cons

Google Pixel 4a

Xiaomi 15 Ultra

  • Outstanding camera versatility
  • Fast wired and wireless charging
  • Bright display
  • Heavy
  • Software still polishing animations
  • Limited availability in some regions

Every Spec, Side by Side

Specification
Google
Google Pixel 4a
Xiaomi
Xiaomi 15 Ultra
Battery 3 specs
Type
Li-Po 3140 mAh
Market-dependent versions:· Si/C Li-Ion 5410 mAh - Global· Si/C Li-Ion 6000 mAh - China
Charging
18W wired, PD2.0
90W wired, 80W wireless
Capacity
5410 mAh
Body 5 specs
Dimensions
144 x 69.4 x 8.2 mm (5.67 x 2.73 x 0.32 in)
161.3 x 75.3 x 9.35 mm
Weight
143 g (5.04 oz)
226 g
Build
Glass front (Gorilla Glass 3), plastic back, plastic frame
Glass front, glass-fiber reinforced plastic back or silicone polymer back (eco leather), aluminum frame
SIM
Nano-SIM + eSIM
· Nano-SIM + Nano-SIM· Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)
 
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Aerospace-grade glass fiber
Connectivity 8 specs
WLAN
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA
Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band or tri-band, Wi-Fi Direct
Bluetooth
5.0, A2DP, LE, aptX HD
6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5
Positioning
GPS, GLONASS, GALILEO, QZSS, BDS
GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS
NFC
Yes
Yes
Radio
No
No
USB
USB Type-C 3.1
USB Type-C 3.2 Gen 2, DisplayPort, OTG
Infrared port
Yes
5G
Yes
Display 4 specs
Type
OLED, HDR
LTPO AMOLED
Size
5.81 inches, 83.2 cm2 (~83.3% screen-to-body ratio)
6.73 inches
Resolution
1080 x 2340 pixels, 19.5:9 ratio (~443 ppi density)
1440 x 3200 pixels
Protection
Corning Gorilla Glass 3
Xiaomi Shield Glass 2.0, Mohs level 6
Features 2 specs
Sensors
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer
 
Two-way satellite communication (China model only)
Launch 2 specs
Announced
2020, August 03
2025, February 27
Status
Available. Released 2020, August 20
Available. Released 2025, February 27
Main Camera 4 specs
Single
12.2 MP, f/1.7, 27mm (wide), 1/2.55", 1.4µm, dual pixel PDAF, OIS
Features
LED flash, Pixel Shift, Auto-HDR, panorama
Laser AF, color spectrum sensor, Leica lenses, Dual-LED flash, HDR, panorama, 67mm filter ring holder (optional)
Video
4K@30fps, 1080p@30/60/120fps; gyro-EIS
8K@30fps, 4K@30/60/120fps, 1080p@30/60/120/240/480/960/1920fps, gyro-EIS, Dolby Vision HDR 10-bit rec. (4K@60fps, 1080p)
Quad
50 MP + 50 MP + 200 MP + 50 MP
Memory 5 specs
Card slot
No
No
Internal
128GB 6GB RAM
256GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
 
UFS 2.1
UFS 4.1
RAM
16GB
Storage
512GB
Misc 4 specs
Colors
Just Black, Barely Blue
Black, White, Silver Chrome, Green
Models
G025J, GA02099, G025N
25010PN30G
Price
$ 149.89 / C$ 166.99 / € 90.00
$ 693.75 / £ 1,295.00 / € 812.34
SAR EU
1.00 W/kg (head)     1.00 W/kg (body)    
Network 7 specs
Technology
GSM / HSPA / LTE
GSM / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 66, 71
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 42, 48, 66, 71 - International
Speed
HSPA 42.2/5.76 Mbps, LTE (3CA) Cat12 600/75 Mbps
HSPA, LTE, 5G
 
1, 2, 3, 5, 7, 8, 12, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78, 79, 80, 81, 83, 84, 89 SA/NSA - China
5G bands
1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 48, 66, 71, 75, 77, 78, 79 SA/NSA - International
Our Tests 5 specs
Performance
AnTuTu: 268714 (v8) GeekBench: 6426 (v4.4), 1626 (v5.1) GFXBench: 17fps (ES 3.1 onscreen)
Display
803 nits max brightness (measured)
Battery (old)
Endurance rating 76h
Loudspeaker
-24.1 LUFS (Very good)
Battery
Active use score 16:13h
Platform 4 specs
OS
Android 10, upgradable to Android 13
Android 15, HyperOS 2
Chipset
Qualcomm SDM730 Snapdragon 730G (8 nm)
Snapdragon 8 Elite
CPU
Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)
Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
GPU
Adreno 618
Adreno 830
Selfie Camera 3 specs
Single
8 MP, f/2.0, 24mm (wide), 1.12µm
32 MP
Features
HDR
HDR, panorama
Video
1080p@30fps
4K@30/60fps, 1080p@30/60fps, gyro-EIS
Sound 3 specs
Loudspeaker
Yes, with stereo speakers
Yes, with stereo speakers
3.5mm jack
Yes
No
 
24-bit/192kHz Hi-Res & Hi-Res Wireless audio Qualcomm XPAN (24-bit/96kHz audio)
Eu Label 4 specs
Energy
Class A
Battery
58:58h endurance, 1000 cycles
Free fall
Class C (90 falls)
Repairability
Class C

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Common Questions

Which phone is the best in this comparison?

Xiaomi 15 Ultra has the bigger display.

How are the comparison winners decided?

We compare measurable specs (display size, battery capacity, RAM, charging, weight) and price (USD). When two phones tie or data is missing we mark the category "Depends".

Which is more affordable?

The cheaper option is shown as the value winner above. Prices are USD and may vary by region or retailer.