System update

I have zenfone 3 max, when I upgrade to nougat my volte is not working please help

We want to new update AOS 8.0 plez

Why I can't update my device system?

<font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Tenho um Zenfone Go com Android 5.1.Gostaria de saber se vou receber atualização para 6.0.</font></font>


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Hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

How to update my phone one hour lobat 

 update my phone one hour baterry pls