除了新一代Redmi K50、Redmi K50 Pro，Redmi has also released an upgraded version of the Redmi K40S，號稱擁有三大傳承、Four major upgrades。
One of the upgrades is that the liquid-cooled copper tube becomes a 3112 square mm VC liquid-cooled heat dissipation，Area increased by 400%，Support well-known MOBA mobile game 120 frame mode。
The second upgrade is that the fast charge is changed from 33W to 67W，Charging time shortened from 52 minutes to 38 minutes。
The third upgrade is the Sony IMX582 48-megapixel main camera with OIS optical image stabilization，可降低拍照、視頻錄製的抖動。
The fourth upgrade is to change the rounded appearance to the trendy small vertical edge design，tougher and sharper，1 gram lighter at 195 grams，The thickness is 0.1mm thinner to 7.7mm，Also available in bright black、Fantasy blue、silver traces、awn green，The latter two are newly added。
Snapdragon 870 processor + full blood LPDDR5 memory + UFS 3.1 flash memory”Iron Triangle”、三星E4 AMOLED直屏、4500mAh battery，這三個核心的方面都沒有任何變化。
其他不變的還有側邊指紋識別、800萬像素超廣角+200萬像素微距鏡頭、2000萬像素自拍、Wi-Fi 6、杜比Atoms雙揚、X-axis linear motor、NFC、Infrared remote control, etc.。
Redmi K40S已經開賣，提供四種配置版本，6+128GB 1799元、8+128GB 1999 yuan、8+256GB 2199元、12+256GB 2399元，相比K40首發價分別便宜了200/200/300/300元。
The above prices are in CNY
