Your phone keeps turning off likely due to common causes that include battery issues such as a malfunctioning or degraded battery, software glitches, overheating, faulty or incompatible apps, physical damage or loose battery connections, and even scheduled power off settings mistakenly activated. Overheating triggers automatic shutdowns to protect the device, and software bugs or corrupted files can disrupt normal function. Damage or loosened internal components can also cause power interruptions. To fix this, you can check battery health, uninstall faulty apps, update software, ensure the phone stays cool, disable scheduled power offs, and consider professional repair for hardware problems.