The Poco X3 and X3 NFC run on Qualcomm Snapdragon 732G (8 nm) processor with Adreno 618 to handle graphics.

It also supports third-party operating systems such as the Android 11-based LineageOS 18 along with Ubuntu Touch and postmarketOS.

[11][12][13] A temporary fix was rebooting the phone into fastboot, which caused a "recalibration" of the PMIC.

[14] Xiaomi confirmed the issue and gave another 6 months of warranty to the Indian version.

[15] Lot of screens were defect, which caused ghost touch issues and random wake-ups.