Redmi K40

Name: Redmi K40
Brand: Redmi

Redmi · 2021 27.07.2026 · updated 20.08.2026

Redmi K40 from Redmi (2021) is a solid mid-ranger with a rating of 54/100. AnTuTu 1,010,069.

Qualcomm Snapdragon 870

4520 mAh

48 MP

$309

Faster than 69% of smartphones in AnTuTu

Specifications

Processor	Qualcomm Snapdragon 870
Display	6.7" AMOLED, 2400x1080, 120Hz, 1300 nits (peak)
RAM	6GB / 8GB / 12GB
Storage	128GB / 256GB
Battery	4520 mAh · ≈7.6 hrs of active use*
Charging	33W
OS	Android 11
Dimensions	163.7 × 76.4 × 7.8 mm
Weight	196g
NFC	yes
Launch price	$309

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

Cameras

Main	48MP f/1.79
Ultrawide	8MP
Front	20MP

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 a solid mid-ranger.

Performance

Overview and verdict

The Redmi K40 — a solid mid-ranger from Redmi released in 2021 — runs on the Qualcomm Snapdragon 870. Its overall MobileRank rating is 54/100. 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: 36/100). With a 4520 mAh battery and a launch price of $309, value for money scores 46/100.

Pros

6.7" AMOLED display at 120 Hz

Cons

Modest camera capabilities
No telephoto camera

Best for: The Redmi K40 is a good fit for budget-conscious buyers.

Launch price and where to check today's

$309 Launch price

This is the launch price. We do not track current retail prices and make no claim about whether today's is higher or lower: check the stores below. Prices vary by store, region, and configuration.

Yandex Market Ozon Wildberries

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 54 out of 100 in the MobileRank rating. Categories: performance 61/100, camera 36/100, battery 42/100, display 79/100, portability 64/100.

How much does the Redmi K40 cost?

At launch the Redmi K40 cost $309. We do not track current retail prices. Value for money at launch: 46/100.

What battery does the Redmi K40 have?

The Redmi K40 has a 4520 mAh battery with 33W charging. Battery score: 42/100.

Is the Redmi K40 worth buying?

The Redmi K40 is a good fit for budget-conscious buyers. Overall rating — 54/100 (solid mid-ranger).

MobileRank rating

Device profile

Category scores

Performance 61

Display 79

Camera 36

Battery 42

Portability 64

Value for money 46

The score is built from the five categories below (weights are in the methodology); 100% of the weight is known. Value for money is computed separately and is not part of the overall score. How the rating works →