For those who still really want to read in horizontal view using your phone, you may download Sentio app (it will make your phone view everything in desktop mode - horizontal) I realized that some readers of Webnovel still haven't let go of the horizontal view. So, here and cheers hihi.
P. S. This is only applicable for Android. I don't have an Apple gadget so I can't explore any possibilities for this in Apple.
P. P. S. I am not advertising Sentio nor am I in anyway affiliated with them. I am just using their app for whenever I read Webnovel via my smartTV and I want it horizontal. (Not in dex mode but in smart view).