Chosen Solution
I am not able to access my card with files to a text message. I can access cloud services or images on my phone, but not my document folder
Try using a different text messaging program such as Google’s own messages or Allo. The new text message program will be able to retain your current text messages.
There could be a connectivity issue with your SD card. The SD card you are using might not be compatible with your device. The file storage on the SD card might be corrupted. The connected memory card could be locked as well.
Open the Acrobat app. Navigate to the PDF you wish to send. Tap the send icon on the top right portion of the screen. In the new dialog box, you have the option to share via email, or you can send a copy via Messages or other third-party apps such as WhatsApp. Regards, Will