The phone automatically shut down while reading a novel. There might be a problem with the battery. Under normal circumstances, the life of the mobile phone battery is limited. If it is not used for a long time or used incorrectly, the life of the battery will be shortened, which may cause the mobile phone battery to age, fail or be damaged. If there is a problem with the phone battery, you can try the following methods to save it: 1 connect the phone to the charger and wait for a while for the battery to be fully charged. 2. connect the phone to the computer and use the charger to charge the phone. 3. Take the phone apart and check if the battery is damaged or aged. If there was a need to replace the battery. If the battery is old or damaged, you may need to replace the battery. It is recommended to back up important data before replacing the battery to avoid data loss. If the above methods cannot solve the problem, it is recommended to go to the mobile phone repair shop for inspection and repair.