Originally Posted by rambik33
While not so simple, but the result is. MTP too working.
Phone is OREO .
Did you use probably this TWRP ?
And did you format data, like described in this Thread?
Or to you have a new TWRP, which does support data encryption by default (like other TWRPs for some devices...) ?
If you have special knowledge how to manage access to internal storage on P9 - why not share it with the Users here on xda officially, instead to make a secret?