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Oh, sorry. I am considering making an app, which has nothing to do with the PDF question. I got them mixed up but should not have mentioned it on this question.<br />
<br />
For EPUB, is that a better user experience on an iPhone or Android than a PDF? Does EPUB require me to program the solution, like it's a website running on the phone?<br />
<br />
How about Kindle, Nook and Kobo? Does PDF work there too?
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Oh, sorry. I am considering making an app, which has nothing to do with the PDF question. I got them mixed up but should not have mentioned it on this question.

For EPUB, is that a better user experience on an iPhone or Android than a PDF? Does EPUB require me to program the solution, like it's a website running on the phone?

How about Kindle, Nook and Kobo? Does PDF work there too?

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You're welcome. Glad to help.
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<div class="content wysiwyg-content">
I plan to release a book on PDF, at first. That's before I think about a printed version and before I invest in any particular platform.<br />
<br />
1) On what devices will PDF not functionally work?<br />
2) On what devices will PDF not work in practical terms?<br />
<br />
I am most interested in making it available on many platforms, then I will be interested in offering it in the preferred technologies for certain platforms.<br />
<br />
I would later consider a tool like Xamarin for cross-platform development. I will avoid native apps...<br />
<br />
Thanks
</div>
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I plan to release a book on PDF, at first. That's before I think about a printed version and before I invest in any particular platform.

1) On what devices will PDF not functionally work?
2) On what devices will PDF not work in practical terms?

I am most interested in making it available on many platforms, then I will be interested in offering it in the preferred technologies for certain platforms.

I would later consider a tool like Xamarin for cross-platform development. I will avoid native apps...

Thanks

On what devices does a PDF NOT work?

Web development includes all aspects of presenting content on intranets and the Internet, including delivery development, protocols, languages and standards, server software, browser clients, databases and multimedia generation.

Web Development

The iPhone is a smartphone made by Apple Inc. It and the iPad, along with several other mobile devices from Apple, run on the iOS operating system, which has its own topic, as does the iPad for device-specific questions. Native iOS applications are written in Objective-C or in Swift using the Cocoa Touch frameworks or HTML5 compiled with the help of a package manager such as Adobe PhoneGap; a common IDE is Xcode.

iPhone

Office Productivity refers both to the act of being productive and efficient in an office or professional environment, as well as the software applications used to "produce" information. This includes the development of professional skills, creating work processes, and almost any program used to create or modify a document, image, audio or video clip. However, business application suites such as Microsoft Office, which include word processing, spreadsheet and presentation programs, are typically called productivity software, as contrasted with a "utility program," such as a file manager, which is used to organize files and folders on the computer. Many office- and business-oriented groups of programs are organized into suites.

Office Productivity

A cellular phone (also known as a mobile phone, cell phone, hand phone, or simply a phone) is a telephone that can make and receive telephone calls over a radio link while moving around a wide geographic area by connecting to a cellular network provided by a mobile phone operator, allowing access to the public telephone network. Mobile phones that offer services such as text messaging, email, Internet access, business applications, gaming, photography and more general computing capabilities are referred to as smartphones.

Cell Phones

Android is a mobile operating system developed by Google, based on the Linux kernel and designed primarily for touchscreen mobile devices such as smartphones and tablets. Android's user interface is based on direct manipulation, using touch gestures that loosely correspond to real-world actions, such as swiping, tapping and pinching, to manipulate on-screen objects, along with a virtual keyboard for text input. In addition to touchscreen devices, variants of Android are also used on notebooks, game consoles, digital cameras, televisions, automobiles and other electronics. Applications are usually developed in Java programming language using the Android software development kit (SDK), but other development environments are also available, including Delphi, Ruby and Visual Studio (using C++).