https://www.malaysiainternet.my/2019/07/use-your-phones-camera-to-preserve-important-documents-with-these-pdf-conversion-tools-how-to-use-your-phones-camera-to-create-a-pdf-document-on-android-for-free/
Use your phone's camera to preserve important documents with these PDF conversion tools How to use your phone's camera to create a PDF document on Android for free