Since what-you-see-is-what-you-get through a smartphone camera, you get the view through any lens you put over it.
However it’s hard to keep everything steady while taking pictures.
You can hold your botanical hand lens in place with a rubber band or two, like this.
Here’s an example of the results.
Of course, you can also shoot video. If it’s a video call, like Skype, you can ask the person at the other end of the line about the plant as you pan and zoom around it.
A simple example like this, (Oxalis corniculata L.) you would naturally identify yourself, without any help. However, suppose it were something outside your experience, such as:
Here’s the real value of video plant ID. You can draw on expertise anywhere in the world you have connectivity.