Redmi K40

Redmi · 2021 22.07.2026

Redmi K40 — Redmi K40 from Redmi (2021) is a budget phone with a rating of 34/100. AnTuTu 1,010,069.

Qualcomm Snapdragon 870
4520 mAh
48 MP
$309

Faster than 69% of smartphones in AnTuTu

Specifications
ProcessorQualcomm Snapdragon 870
Display6.7" AMOLED, 2400x1080, 120Hz
RAM6GB / 8GB / 12GB
Storage128GB / 256GB
Battery4520 mAh · ≈7.6 hrs of active use*
Charging33W
OSAndroid 11
Weight196g
Price$309

* battery life is an estimated figure based on capacity, display, and chipset — not a lab measurement.

Cameras
Main48MP f/1.79
Ultrawide8MP
Front20MP
Benchmarks
AnTuTu 1010069
Geekbench Single 1298
Geekbench Multi 3520
Based on AnTuTu results, Redmi K40 is faster than 69% of smartphones in our database. This device is from the budget segment.
Performance
Overview and verdict

The Redmi K40 — a budget phone from Redmi released in 2021 — runs on the Qualcomm Snapdragon 870. Its overall MobileRank rating is 34/100. In benchmarks, the device scores 1,010,069 in AnTuTu and 1298/3520 in Geekbench 6. The camera system includes a 48 MP main sensor (score: 31/100). With a 4520 mAh battery and a price of $309, value for money scores 89/100.

Pros
  • 6.7" AMOLED display at 120 Hz
  • Great value at $309
Cons
  • Limited performance for demanding games
  • Modest camera capabilities
  • Small battery (4520 mAh)
  • No wireless charging
  • No telephoto camera
Best for: The Redmi K40 is a good fit for buyers looking for the best value for money, budget-conscious buyers.
Price and availability
$309 recommended price

Prices may vary by store, region, and configuration. We recommend comparing prices before buying.

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Frequently asked questions
What processor does the Redmi K40 have?

The Redmi K40 runs on the Qualcomm Snapdragon 870 chipset. It scores 1,010,069 points in AnTuTu.

What is the Redmi K40's rating?

The Redmi K40 scores 34 out of 100 in the MobileRank rating. Performance is 8/100, camera 31/100, battery 28/100.

How much does the Redmi K40 cost?

The recommended price for the Redmi K40 is $309. Value for money: 89/100.

What battery does the Redmi K40 have?

The Redmi K40 has a 4520 mAh battery with 33W charging. Battery score: 28/100.

Is the Redmi K40 worth buying?

The Redmi K40 is a good fit for buyers looking for the best value for money, budget-conscious buyers. Overall rating — 34/100 (budget phone).

Redmi K40
MobileRank rating
Device profile
Category scores
Performance 8
Display 100
Camera 31
Battery 28
Design 55
Value for money 89
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Processor
Qualcomm Snapdragon 870

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