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Black rectangular smartphone with glossy mirror finish and pop-up shoulder triggers

Mi

Mi Black Shark 4 5G 6.67" 12/256GB Snapdragon 870 Mirror Black cell phones - unlocked

SKU CH-BNJ9-JR6FS

Unlocked 5G phone with a 144 Hz AMOLED display, Snapdragon 870 processor, 12 GB RAM, 256 GB storage and a 48 MP triple camera

  • Storage drive256 GB
  • RAM capacity12 GB
  • Product colorBlack
  • Snapdragon 870 5G chipset powers smooth 5G gaming
  • 144 Hz Super AMOLED display delivers fluid 6.67 inch visuals
  • 12 GB RAM with 256 GB UFS 3.1 storage enables fast multitasking
  • Triple 48 MP camera system captures detailed wide and ultrawide shots
  • Physical pop-up triggers give tactile control for competitive play

Gaming phone with 144 Hz display

The Mi Black Shark 4 5G is an unlocked smartphone built around a 6.67 inch Super AMOLED panel running at 144 Hz with HDR10+ and a peak brightness of 1300 nits. A Snapdragon 870 5G chipset with an octa-core CPU and Adreno 650 GPU drives the device. It ships with 12 GB of RAM and 256 GB of UFS 3.1 storage. The triple rear camera array is led by a 48 MP wide sensor alongside an 8 MP ultrawide and a 5 MP macro unit. Dual SIM standby and physical pop-up gaming triggers complete the core feature set.

Competitive mobile gamers and power users

This handset suits buyers who want a high refresh rate screen, shoulder triggers and flagship-tier processing for demanding titles. The 144 Hz panel and Snapdragon 870 combination targets sustained frame rates in intensive games. Buyers who need expandable storage should look elsewhere because there is no card slot. Users who prefer a more compact or lighter device may find the 210 g weight and 9.9 mm thickness less comfortable for everyday carry.

144 Hz Super AMOLED display

The 6.67 inch Super AMOLED screen operating at 144 Hz with HDR10+ support is the specification that defines whether this phone matches the buyer's priorities. It delivers the motion clarity and peak brightness needed for fast-paced gaming and HDR content. If a lower refresh rate or a different panel technology is acceptable, other models may meet the requirement at a different price point.

How it compares

Measured against everything we stock in Unlocked Smartphones, at today’s prices. Recalculated every night.

Price $594.99
Pricier than about 89% of the 2,409 comparable items (median $168.99).
Storage drive 256 GB
Higher than about 70% of the 1,888 comparable items (median 128 GB).

Specifications

Product
Product colorBlack
Memory
RAM capacity12 GB
Storage
Storage drive256 GB

Questions about this item

How do I insert the nano-SIM cards into the dual SIM tray, and what orientation mistake do people make?

Use the ejector pin to open the tray, place both nano-SIMs with gold contacts facing down and the notched corner aligned, then slide the tray back until it clicks.

Which component will need replacement first after heavy daily charging cycles?

The built-in lithium-ion battery is not user-replaceable; after several hundred full cycles its capacity drops and a service centre must swap the whole unit.

What thermal limit appears first during extended 144 Hz gaming sessions?

The Snapdragon 870 throttles its 3.2 GHz core when the chassis reaches its heat-soak point, lowering sustained frame rates until the phone cools.

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