Stay with iphone. There is no match with Oneplus. Selfie cam is nakli and unreal as all pimples, scars etc get eliminated resulting in over smooth picture though clarity is good. Rear cam is nothing out of the box either. Os is very simple as if designed for school kids.How good is the camera on the oneplus. Want to move from an iphone 8 plus, but the two things I love on this phone is the camera and the battery life.
In fact stupidly designed settings menu where the usual settings are hidden under irrelevant options and you literally have to struggle with finding basic settings which they have cluttered under some their so called advanced options.
If it was stock Os it would have been a good phone.
Be happy with your iPhone 8 it's cam and battery aint matchable with any Android unless true flagships which are costly.