The most likely cause of a user's smartphone experiencing rapid battery drainage and overheating could be:
1. Too many running apps: When multiple applications are running simultaneously in the background, they can consume a significant amount of the phone's processing power and resources, leading to increased battery usage and generating heat.
2. Faulty battery: A defective or damaged battery can also cause rapid battery drainage and overheating issues. If the battery is not functioning properly, it may not hold a charge efficiently or may generate excess heat during charging or usage.
While an outdated operating system or having the screen brightness set too high can impact battery life, the presence of numerous running apps and a faulty battery are more likely culprits for the described issues. It's advisable to check the running apps and the battery condition to address the problem effectively.
