<!-- First of all, thanks for reaching out and reporting any issues you have found. Your feedback is valuable to the development of WebViewer UI! --> <!-- If the issue can only be reproduced on a specific document, or you would need to share some company/personal information, then we recommend you use open a support ticket via https://www.pdftron.com/form/request/ --> **WebViewer version** 10.12.0 **The current behavior** While adding an attachment to an annotation it works fine on laptop / desktop but it's not working on mobile / tablet **The expected behavior** It should allow adding attachment from mobile / tablet **Steps to reproduce** Click on Annotate -> Note -> Add note -> Add attachment.