There could be many reasons why he couldn't read novels on his phone. He could try to restart his phone to see if it could solve the problem. If the problem still exists, you can try to restore the phone to the factory settings or perform other deep cleaning and reset operations. If these methods still could not solve the problem, he might need to consider changing his phone or software version. In this case, it is recommended to back up important data first and then go to a mobile phone repair shop or a professional mobile phone software developer for help.