If the screen went black while listening to a novel on the phone, it might be because the phone was adjusting the playback progress or pausing. When the screen went black, the phone would enter sleep mode, and the current operation would be paused until the active symbol appeared on the screen. If there was no activity sign after the black screen, it could be that the phone had malfunctioned or the system had crashed, causing the novel to be unable to continue. At this time, you can try to restart your phone or try to reopen the novel listening app. If none of the above methods can solve the problem, there may be a problem with the novel app. You can try to unload the app and reinstall it or contact the app developer to fix it.