I keep a few files on my S25+ that I specifically do not backup online. My phone only. The files have a docx extension and every time one is updated it will not overwrite the existing file, it makes a copy with (1). The extensions .log, .txtf, are not openable and need an app from the Play Store. Then there are .txt files but they need to be uploaded to Google Docs to open, while .rtf files need to be uploaded and converted to a Google Docs file. A .doc file needs to be updated to .docx.
Does the S25 series have any text based document format that do not need an app?
