Samsung SM-S731U Galaxy S25 FE 5G Dual SIM TD-LTE US 128GB / SM-S731T (Samsung R13S) vs Xiaomi Black Shark 5 RS 5G Standard Edition Dual SIM TD-LTE CN 256GB KSR-A0 (Xiaomi Kaiser): Which One Should You Buy?

Samsung SM-S731U Galaxy S25 FE 5G Dual SIM TD-LTE US 128GB / SM-S731T (Samsung R13S) edges ahead with a BeastScore of 69.8/100 — but the right choice depends on what matters to you.

Head-to-head

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Samsung · 2025

Samsung SM-S731U Galaxy S25 FE 5G Dual SIM TD-LTE US 128GB / SM-S731T (Samsung R13S)

70/ 100

Launch pricePrice on request

✕

Xiaomi · 2022

Xiaomi Black Shark 5 RS 5G Standard Edition Dual SIM TD-LTE CN 256GB KSR-A0 (Xiaomi Kaiser)

70/ 100

Launch pricePrice on request

Head-to-head

Samsung SM-S731U Galaxy S25 FE 5G Dual SIM TD-LTE US 128GB / SM-S731T (Samsung R13S) wins 0 of 5 categories

Here's exactly where each phone is stronger.

Samsung SM-S731U Galaxy S25 FE 5G Dual SIM TD-LTE US 128GB / SM-S731T (Samsung R13S)

0 wins

Xiaomi Black Shark 5 RS 5G Standard Edition Dual SIM TD-LTE CN 256GB KSR-A0 (Xiaomi Kaiser)

0 wins

At a glance

Bigger shape = better phone.

Samsung SM-S731U Galaxy S25 FE 5G Dual SIM TD-LTE US 128GB / SM-S731T (Samsung R13S)Xiaomi Black Shark 5 RS 5G Standard Edition Dual SIM TD-LTE CN 256GB KSR-A0 (Xiaomi Kaiser)

Category winners

Scores out of 100. How we score

• SpeedTie
  80

  80
• CameraTie
  60

  60
• VideoNot enough data
• SelfieNot enough data
• BatteryTie
  78

  78
• DisplayTie
  62

  62
• ConnectivityNot enough data
• SecurityNot enough data
• ValueTie
  68

  68

Key differences

• Samsung SM-S731U Galaxy S25 FE 5G Dual SIM TD-LTE US 128GB / SM-S731T (Samsung R13S) has the bigger battery4,900 mAh vs 4,500 mAh
• Samsung SM-S731U Galaxy S25 FE 5G Dual SIM TD-LTE US 128GB / SM-S731T (Samsung R13S) has the bigger screen6.74" vs 6.67"
• Samsung SM-S731U Galaxy S25 FE 5G Dual SIM TD-LTE US 128GB / SM-S731T (Samsung R13S) is lighter190 g vs 220 g

See all specs ↓

Why buy each phone

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Reasons to buy Samsung SM-S731U Galaxy S25 FE 5G Dual SIM TD-LTE US 128GB / SM-S731T (Samsung R13S)

• ✓30 g lighter (190 g), easier to hold
• ✓Bigger 4,900 mAh battery (+400 mAh)
• ✓6.74" display

Reasons to buy Xiaomi Black Shark 5 RS 5G Standard Edition Dual SIM TD-LTE CN 256GB KSR-A0 (Xiaomi Kaiser)

• ✓6.67" display at 144 Hz

Full specifications

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Specification	Samsung SM-S731U Galaxy S25 FE 5G Dual SIM TD-LTE US 128GB / SM-S731T (Samsung R13S)	Xiaomi Black Shark 5 RS 5G Standard Edition Dual SIM TD-LTE CN 256GB KSR-A0 (Xiaomi Kaiser)
1. Display & Screen
Screen type	AM-OLED display	AM-OLED display
Screen Size	6.74"	6.67"
Resolution & Density	1080x2340 (383 ppi)	1080x2400 (395 ppi)
Refresh Rate	60 Hz	144 Hz ProMotion
Brightness	N/A	N/A
Screen Protection	Not listed	Not listed
2. Platform & Performance
Chipset / Processor	Samsung Exynos 2400 5G S5E9945 (4nm)	Snapdragon 888+ (5nm)
CPU Cores	Not listed	Not listed
GPU Graphics	Samsung Xclipse 940	Adreno 660
Operating System	Android	Android 11
3. Memory & Storage
RAM Memory	8 GB LPDDR	8 GB LPDDR
Internal Storage	128GB	256GB
Storage Speed	Not listed	Not listed
Card Slot	No	No
4. Main Camera Optics
Primary Camera	N/A	N/A
Telephoto Zoom	Not listed	Not listed
Ultrawide Camera	N/A	N/A
LiDAR / Depth	Not listed	Not listed
5. Video
Main Camera Video	Not listed	Not listed
Front Video	Not listed	Not listed
6. Selfie Camera
Selfie Lens	N/A	N/A
7. Body & Dimensions🏆 Samsung SM-S731U Galaxy S25 FE 5G Dual SIM TD-LTE US 128GB / SM-S731T (Samsung R13S) Lightest Chassis
Dimensions	N/A	163.69 x 76.21 x 10.4 mm
Weight	190 g	220 g
Build Materials	Not listed	Not listed
SIM Type	Not listed	Not listed
Water Resistance	Not listed	Not listed
8. Battery & Charging
Battery Capacity	4,900 mAh	4,500 mAh
Wired Fast Charging	N/A	120W wired fast charging
Wireless Charging	Not listed	Not listed
Reverse Charging	Not listed	Not listed
9. Sound & Audio
Loudspeaker	Not listed	Not listed
3.5mm Headphone Jack	No	No
10. Connectivity
Wi-Fi Standard	Not listed	Not listed
Bluetooth	Not listed	Bluetooth 5.0
USB Port & Speed	Not listed	USB C reversible
NFC	Yes	Yes
11. Sensors & Security
Sensors	Not listed	Not listed
Satellite Features	Not listed	Not listed
12. Colors & Overview
Colors	Not listed	Not listed
Launch Price	Price on request	Price on request