Redmi K40S
I'm sorry, but there is no official information available about a Redmi K40S smartphone. It is possible that you might be referring to the Redmi K40 or Redmi Note 10S. Here are their specifications:
Redmi K40:
Display:
- 6.67-inch Full HD+ (1080 x 2400 pixels) Super AMOLED display with a 120Hz refresh rate
Processor:
- Qualcomm Snapdragon 870 chipset
Memory and Storage:
- 6GB or 8GB of RAM
- 128GB or 256GB of internal storage
Cameras:
- Triple rear camera setup:
- 48-megapixel primary sensor
- 8-megapixel ultra-wide-angle sensor
- 5-megapixel macro sensor
- 20-megapixel front-facing camera
Battery:
- 4,520mAh battery with support for 33W fast charging
Other features:
- Side-mounted fingerprint sensor
- Wi-Fi 6, Bluetooth 5.2, GPS, NFC
- Dual-SIM (Nano)
- Android 11-based MIUI 12
Redmi Note 10S:
Display:
- 6.43-inch Full HD+ (1080 x 2400 pixels) Super AMOLED display with a 60Hz refresh rate
Processor:
- MediaTek Helio G95 chipset
Memory and Storage:
- 6GB of RAM
- 64GB or 128GB of internal storage
- Expandable storage up to 512GB via microSD card
Cameras:
- Quad rear camera setup:
- 64-megapixel primary sensor
- 8-megapixel ultra-wide-angle sensor
- 2-megapixel depth sensor
- 2-megapixel macro sensor
- 13-megapixel front-facing camera
Battery:
- 5,000mAh battery with support for 33W fast charging
Other features:
- Side-mounted fingerprint sensor
- Wi-Fi, Bluetooth 5.1, GPS, NFC
- Dual-SIM (Nano)
- Android 11-based MIUI 12