There are many ways to write a novel on a mobile phone. Here is one of them: 1. download and install a smartphone application that supports handwriting input, such as Procreate for iOS or OneMind for Android. 2 Open the app and register an account. When registering, you need to provide some personal information such as name and email address. 3. download and install a novel writing app that supports keyboard input, such as Tangyuan Creation or Writing Treasure. 4 Open the app and log in to your account. After logging in, he could start writing. In the writing application, you can input text through the keyboard or by hand. Handwritten input required a special pen or tablet, which was relatively complicated. 5 When writing a novel on the phone, you can choose to save the text to the local storage or to the cloud storage. Save it to cloud storage and easily sync it to other devices such as computers or tablets. 6. Pay attention to protecting privacy and copyright when writing novels on your phone. You can set privacy settings and copyright protection in the writing app to ensure that your work is not violated. The above are some basic steps and precautions for writing a novel on a mobile phone. I hope it will be helpful.