Lighting and surface
Use daylight or a bright lamp and a flat dark surface. Avoid shadows from your hand or phone.
Hold the phone straight
Keep the phone parallel to the page so the text is not stretched, and make sure all four corners are visible.
Take sharp photos
Tap to focus on the text and hold still. Take a second photo if anything looks blurred.
Make a PDF
Add the pages to the image to PDF tool, put them in order and download one PDF.
If the file is too big
Choose the "Small file" quality, or compress the photos first with the 200KB tool.