C7 pro aleready had november security patch level but again november security update is a available... what is this?...

Please give us good lock support in c7 pro.... other devices get it in oreo update but c7 pro didn't.....so please give us good lock support it is very useful...

Problem  1)sound quality decrese and very poor sound ...as samsund removed stereo mode..2)unable to remove icon frames even only icons without frame is selected.3)no good lock is present.4) update of apps automatically done such as my files and other...

Why good lock not provided in c7 pro in oreo update.......

After oreo update sound quality decreased..... now very bad sound quality......