Oreo updates A 5 2016 and pie update kb hoga plz sir answer

sir oreo A 5 2016 aagya hai lekin mere ph mai aaj bhi 7N kam kar rha hai aur aap logo ka msg april 2017 or may 2018 A 5 2016 mai oreo update mil gya hai to kese karu mai update oreo plz sir

sir mere paas samsung galaxy A5 2016 hai pre usme kai dino se net slow down hai app kuch halp kar skte ho plz me jio sim use karta aur mane jio customers care bhi baat ki k phone kuch setting problem hoga to plz halp me sir

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