Can I say these? Which is to be preferred? or have you got any other suggestion?
Hereinafter client refers to a smartphone using Android.
Henceforward client refers to a smartphone using Android.
My intended meaning is that when I say "client" I mean an Android smartphone.
Earlier in the text I describe different kinds of possible clients, but since my report only focuses on android phones I want to be able to write "client" and have the reader understand the meaning of 'client' as 'Android phone'.