[Lock screen, status bar, notification shade]
Optimization - When SIM card hasn't been inserted, status bar shows 'SIM card not inserted' icon (2-25)
Fix - If user received a new notification while pulling down the notification shade, the shade would freeze (2-25)
[System]
Optimization - Increased Wi-Fi download performance when using Bluetooth headphones to make a call (Mi 3) (2-26)
Fix - Phone couldn't connect to some types of routers (Mi 3) (2 26)
Fix - Ring volume for incoming call was inconsistent when using headphones (Mi 3) (2-26)
[Messaging]
Fix - Sometimes, in Airplane mode, Messaging app would FC (2-25)
Fix - Sometimes Cloud messaging wouldn't work (2-25)
Fix - Sometimes when sending group messages from SIM 1 or SIM 2, messaging app would FC (Redmi) (2-25)
[Security Center]
New - Scheduled reminders for Trash clean up (2-26)
New - When installation of a new app fails due to insufficient storage space, Security Center reminds user to clean up Trash (2-26)
Optimization - Default reminder time for Trash clean up set to 3 days (2-26)
Fix - Data usage was displayed incorrectly (Redmi) (Mi 3) (2-25)
