How to combine multiple images into one PDF file
- Open Google Play (link) or App Store (link) and install photo2pdf converter
- Click the Gallery button
- Select one or more images
- Click the "DONE" button - this will start the PDF creation process. After creating the document, a form for sharing a PDF file will immediately open.
By the way, you can change the paper orientation by clicking the sheet icon to the left of the main button.