Recently, I downloaded a few e-books and put them on my computer. But how do I put them on my phone? Which folder should I put it in? Why couldn't the phone display it?

Putting the e-book into the phone required saving the e-book to the computer first. Generally speaking, e-books can be saved in different folder on the computer. The specific location may vary according to the phone model and operating system. To save an e-book on your phone, you can open the folder where the e-book is located on your computer and copy or cut the e-book into the same folder on your phone. If the phone can't display the e-book, it may be because the e-book file format or storage location is incorrect, or it may be because the phone can't recognize the e-book file. In this case, you can try to renamed the e-book file or move it to a different location, or try to open the e-book with another reading application. If you still encounter problems, try contacting the phone manufacturer or the customer service support of the e-reading application for more detailed help and guidance.