Smart phone waterproof Technology

[rajuoperA]

I want to make my mobile(j7pro) waterproof & my question is nano coating  mobile waterproof technology is harmful or not??

Need expart help!!!

[itsb]

those who told you to nano coat... they just fooled you.
it's did nothing.

[rajuoperA]

https://youtu.be/1ctk_2YNNtc

[itsb]

j7pro is built like tank. my last phone was j7p & I throw it to death so it's died but middle frame inside phone & back metal cover have zero dent or bend... normal water like rain & little splash won't able to harm it

[rajuoperA]

https://youtu.be/1ctk_2YNNtc

[RohanGhag]

You Can't Add Water-resistant , Its Done By Manufacturer When Manufacturing