My K50 Ultra, when using the stable version 1.0.10.0, had an onscreen time of 5-6 hours. However, after upgrading to the xiaomi.eu_DITING_OS1.0.12.0.ULFCNXM_14.zip version, the battery drains quickly, the device heats up more, and the onscreen time is only 3-4 hours. I hope the admin can fix...