Would you provide more information about the problem?
Do you have the desktop Reader app on a Windows/Mac computer or the mobile Reader app on an iPad/iPhone or Android tablet/phone?
What is the operating system on your computer/device?
Have a mobile reader app on iPad
Sent from my iPad
Currently, Acrobat Reader mobile apps (for iOS, Android, Windows Phone) do not have an option to change font size for Sticky Notes. Sorry for the inconvenience.
Would you like to submit a feature request?
Our Product Management team will take your feature request into consideration for a future release.