Smart phones usually support a variety of e-book format. Some of the common format include: 1. The Kindle format: It is an e-book format launched by Amazon that can be read on smart phones, tablets, and other electronic devices. 2. MOBI-format: Similar to the Kindle but only supports single-page reading and not flipping pages. 3. EPUB format: It is an upgraded version of the MOBI-format that supports multi-page reading and automatic page flipping. <strong></strong></strong><strong></strong> 5.<strong></strong> Smart phones usually support a variety of e-book format. Choosing the appropriate format can better support the reading experience.