I used to use it with one hand using my thumb to tap, but am now finding it is much easier for me to hold it in one hand and use the index finder of the other hand to tap.
If you move the most used icons within you thumbs reach, you can do well with one hand.
I just feel more engaged with my content when I’m using both hands.
Starting with the iphone7 and 3D Touch
It’s really almost impossible to use one hand.
Only people with larger hands can really use all the functions while using the iPhone with one hand. And there’s no way the X+ will be a one handed phone this yest