All three variants share the same display across the board, which is a Gorilla Glass 5-protected Samsung E4 6.67-inch AMOLED flat panel with 1080 x 2400 px resolution, 120Hz refresh rate and 360Hz touch sampling rate. The Redmi K40 trio features a side-mounted fingerprint sensor on the power button, Dolby Atmos tuned stereo speakers, sub-6 GHz 5G and Wi-Fi 6 connectivity, Bluetooth 5, NFC, an IR blaster, and a 4,520mAh battery with 33W fast charging via USB-C. Concurrently, all three are also certified IP53 for dust and water resistance.
Both the Redmi K40 Pro and Pro Plus are equipped with the same Snapdragon 888 chipset, but differ in terms of RAM and storage configurations. Specifically, the former comes with up to 6GB RAM and up to 256GB of storage, while the latter is offered only with 12GB RAM and 256GB storage. The standard K40, on the other hand, is powered by a Snapdragon 870, along with RAM and storage options of up to 12GB and 256GB respectively. It’s also worth pointing out that the 870 is a revamped version of Qualcomm’s last flagship, the Snapdragon 865, now featuring a clock speed of 3.2 GHz and an Adreno 650 GPU.