The most common reasons why a device keeps turning off are related to battery issues, overheating, software glitches, hardware malfunctions, and power supply problems. For phones, a deteriorating battery or one low on charge can cause random shutdowns. Overheating can trigger automatic power-offs to protect internal components, often due to intensive use or high ambient temperatures. Software bugs or incompatible apps can cause the system to shut down unexpectedly. Physical damage or loose connections, especially around the battery, may also lead to power issues. For computers, overheating, faulty power supply units (PSU), hardware failures, and software conflicts are typical causes. Checking battery health, cooling systems, software updates, and power connections usually helps resolve the problem.