A PDF reader is a software or service that lets users view and navigate PDF files. Some PDF readers also provides advanced features like editing and converting.
To open a PDF document with our PDF reader, launch the program and click Open, then you can select the PDF file you want to view.
If you PDF won't open, you can first check if the PDF file is corrupted. If it's the case, you can try to re-download the PDF or ask the sender for a new copy. If the PDF is no corrupted, please check you have the latest version of the PDF reader or trying to use another PDF reader.
Of course you can. There are many PDF reader apps for both Android and iOS devices. Some popular ones include Adobe Acrobat Reader, Foxit PDF Reader, Google Drive, Apple Books, etc.
Generally, PDFs should look the same on different devices as PDF are PDFs are designed to preserve their layout across different devices. However, factors like missing fonts, rendering engines, etc. will sometimes cause slight differences in appearance.