BeastCompare

Galaxy A51 vs Motorola Razr 40 Ultra: Which One Should You Buy?

Motorola Razr 40 Ultra edges ahead with a BeastScore of 74.3/100 — but the right choice depends on what matters to you.

Head-to-head
Comparing 2 devicesSwipe ⇄
Samsung · 2019

Galaxy A51

Galaxy A51
70/ 100
Launch price$399
Motorola · 2023

Motorola Razr 40 Ultra

Motorola Razr 40 Ultra
74/ 100
Launch price$999
Head-to-head

Motorola Razr 40 Ultra wins 3 of 7 categories

Here's exactly where each phone is stronger.

Galaxy A51
Galaxy A51
3 wins
Motorola Razr 40 Ultra
Motorola Razr 40 Ultra
3 wins
At a glance

Bigger shape = better phone.

SpeedCameraSelfieBatteryDisplayConnectivityValue
Galaxy A51Motorola Razr 40 Ultra
Category winners

Scores out of 100. How we score

  • SpeedMotorola Razr 40 Ultra
    64
    80
  • CameraGalaxy A51
    78
    72
  • VideoNot enough data
  • SelfieTie
    88
    88
  • BatteryGalaxy A51
    70
    58
  • DisplayMotorola Razr 40 Ultra
    62
    96
  • ConnectivityMotorola Razr 40 Ultra
    53
    75
  • SecurityNot enough data
  • ValueGalaxy A51
    80
    55
Key differences
  • Galaxy A51 has the bigger battery4,000 mAh vs 3,800 mAh
  • Motorola Razr 40 Ultra charges faster30W vs 15W
  • Galaxy A51 has a sharper main camera48 MP vs 12 MP
  • Motorola Razr 40 Ultra has a smoother screen165 Hz vs 60 Hz
  • Motorola Razr 40 Ultra has the bigger screen6.9" vs 6.5"
  • Galaxy A51 is lighter172 g vs 184.5 g
  • Galaxy A51 launched cheaper$399 vs $999
  • Motorola Razr 40 Ultra has newer Bluetooth5.3 vs 5
  • Motorola Razr 40 Ultra has more RAM8 GB vs 4 GB
  • Motorola Razr 40 Ultra has faster Wi-FiWi-Fi 6E vs Wi-Fi 5
See all specs ↓

Why buy each phone

Swipe ⇄
Reasons to buy Galaxy A51
  • ✓12.5 g lighter (172 g vs 184.5 g), easier to hold
  • ✓$600 cheaper at launch ($399 vs $999)
  • ✓Bigger 4,000 mAh battery (+200 mAh)
Reasons to buy Motorola Razr 40 Ultra
  • ✓12 MP main camera
  • ✓6.9" display at 165 Hz

Full specifications

Swipe ⇄
SpecificationGalaxy A51Motorola Razr 40 Ultra
1. Display & Screen🏆 Motorola Razr 40 Ultra Wins Display
Screen typeSuper AMOLED Infinity-OpOLED
Screen Size6.5"6.9"
Resolution & Density2400x1080 (405 ppi)2640x1080 (413 ppi)
Refresh Rate60 Hz165 Hz
Brightness530 nits peak1,400 nits peak
Screen ProtectionNot listedNot listed
2. Platform & Performance🏆 Motorola Razr 40 Ultra Wins Performance
Chipset / ProcessorNot listed Snapdragon 8+ Gen 1 (4nm)
CPU CoresNot listedNot listed
GPU GraphicsNot listedAdreno 730
Operating SystemAndroid 10Android 13
3. Memory & Storage
RAM Memory4 GB LPDDR8 GB LPDDR
Internal Storage64GB / 128GB / 256GB256GB
Storage SpeedNot listedNot listed
Card SlotNoNo
4. Main Camera Optics🏆 Galaxy A51 Wins Camera
Primary Camera48 MP, f/212 MP, f/1.7, OIS
Telephoto ZoomNone (digital zoom only)None (digital zoom only)
Ultrawide Camera12 MP, f/2.213 MP, f/2.2
LiDAR / DepthNoneNone
5. Video
Main Camera Video
Not listed
Not listed
Front Video
Not listed
Not listed
6. Selfie Camera
Selfie Lens32 MP, f/2.232 MP, f/2.4
7. Body & Dimensions🏆 Galaxy A51 Lightest Chassis
Dimensions158.5 x 73.6 x 7.9 mm170.8 x 74 x 7.1 mm
Weight172 g184.5 g
Build MaterialsNot listedNot listed
SIM TypeNot listedNot listed
Water ResistanceNot listedIP52
8. Battery & Charging🏆 Galaxy A51 Wins Battery
Battery Capacity4,000 mAh3,800 mAh
Wired Fast Charging15W wired fast charging30W wired fast charging
Wireless ChargingNot listed5W wireless charging
Reverse ChargingNot listedNot listed
9. Sound & Audio
LoudspeakerNot listedNot listed
3.5mm Headphone JackNoNo
10. Connectivity
Wi-Fi StandardWi-Fi 5Wi-Fi 6E
Bluetooth5.05.3
USB Port & SpeedUSB-C 2.0USB-C 2.0
NFCYes (contactless payment)Yes (contactless payment)
11. Sensors & Security
SensorsNot listedNot listed
Satellite FeaturesNot listedNot listed
12. Colors & Overview
ColorsNot listedNot listed
Launch Price$399$999
Our verdict

Motorola Razr 40 Ultra wins — BeastScore 74.3/100

The Motorola Razr 40 Ultra is the better pick for most people thanks to its faster charging (30W vs 15W) and smoother screen (165 Hz vs 60 Hz). The Galaxy A51 is worth a look if you prefer its bigger battery (4,000 mAh vs 3,800 mAh).

Buy Galaxy A51 if you want

Larger battery: 4,000 mAh vs 3,800 mAh · Higher-resolution main camera: 48 MP vs 12 MP

Buy Motorola Razr 40 Ultra if you want

Faster wired charging: 30W vs 15W · Smoother display: 165 Hz vs 60 Hz

Common questions

Which is better: Galaxy A51 or Motorola Razr 40 Ultra?

The Motorola Razr 40 Ultra is the better pick for most people thanks to its faster charging (30W vs 15W) and smoother screen (165 Hz vs 60 Hz). The Galaxy A51 is worth a look if you prefer its bigger battery (4,000 mAh vs 3,800 mAh). BeastScore: Galaxy A51 69.9/100, Motorola Razr 40 Ultra 74.3/100.

What are the main battery and display differences between Galaxy A51 and Motorola Razr 40 Ultra?

Galaxy A51 has a 6.5-inch display and 4000 mAh battery. Motorola Razr 40 Ultra has a 6.9-inch display and 3800 mAh battery.

How do Galaxy A51 and Motorola Razr 40 Ultra compare for speed?

Galaxy A51 scores 64/100 for performance; Motorola Razr 40 Ultra scores 80/100.

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