Of course Apple invented the smartphone, with the iPhone. Very tellingly, while you claim it is not the case, you give zero specifics (no brand, no model name, no release date, nothing that can be remotely verified).
From someone who brags about doing research, your complete lack of any tangible, precise reference is baffling. You clearly don't know what doing research means...
"have in-screen fingerprint sensors" etc.
Once again, you claim you know at least 5 models, but you do not list them. Always vague and useless...
Plus, think a little: if this was possible, why has Samsung put a sensor on the back of its smartphones? Why Apple resorted to the Face ID?
The One Plus 6T is months from being announced and such spec is pure speculation. Your argument is pretty weak, don't you realize it?
Next time, you should try to be a little bit more modest, especially since you give only vague, useless items, and think a little.