I created a new forum post from the original post for you because your question is about Acrobat Reader for iOS (not Android).
As you pointed out, Acrobat Reader for iOS currently does not provide an option to keep a Commenting tool active ("ON").
However, there is a way to add Highlight/Strikethrough/Underline without exiting full screen.
1. Open a PDF document that you want to add highlight in Acrobat Reader for iOS.
2. Tap anywhere in the PDF document to hide toolbars. The PDF document is now shown in full screen.
3. Press & hold over text until you see ext selection in light purple. (Do not tap!)
4. Drag the blue circle(s) left/right/up/down to adjust text selection.
5. Select Highlight/Strikethrough/Underline from the context menu that pops up.
This way, you do not need to switch between screens nor select a Commenting tool from the bottom toolbar. You can remain in the full screen mode.
Do these steps make your reading & highlighting experience less frustrating?
I believe Eugenia means "reading mode". I have the same frustration. At the moment we can't use 'highlight' or 'define' function when we read document under the "reading mode". We have to littlerally switch back to a normal mode to do these. its very inconvenient.
The original post by eugeniacastro was written in September 2015. However, Reading Mode was first introduced to Acrobat Reader 16.06.28 in June 2016. The original problem could not have been related to Reading Mode.
The problem that you experienced is due to the limitation in Reading Mode. Currently, Reading Mode does not support commenting, form filling, search, etc.
Would you please submit a Feature Request form?
Sorry for the inconvenience.
We just released Acrobat Reader 17.03.28 on March 29, 2017.
With Acrobat Reader 17.03.28, the text markup (Highlight, Strikethrough, and Underline) tools remain selected so they can be easily used repeatedly. Now you can keep highlighting text while scrolling with two fingers in the Continuous or Single Page mode.
Please give it a try and let us know what you think.
Hi MobileDeloper CK,
Thank you so much for your quick response. I will submit the feature request form for sure. This will definitely make readings more enjoyable.