* Battery Degradation: Constantly charging your phone to 100% can put stress on the battery and shorten its lifespan. Lithium-ion batteries (used in most phones) degrade over time, and keeping them fully charged for long periods can accelerate this process.

* Safety Risks: While rare, there's always a slight risk of fire or electrical hazards associated with leaving electronics plugged in for extended periods. This is especially true if the charger is faulty or the phone's battery is damaged.

* Overheating: Leaving your phone plugged in for too long can cause it to overheat, which can further damage the battery and potentially affect its performance.

What to do instead:

* Charge your phone to 80-90%: This is considered the ideal range for battery health.

* Unplug your phone when it's fully charged: Don't leave it plugged in overnight or for extended periods.

* Use a timer or smart plug: You can set a timer to automatically disconnect your phone from the charger after a certain time.

* Check your charger: Make sure your charger is in good condition and free from any damage.

Note: Leaving your phone plugged in for short periods, like while you're using it or getting ready in the morning, is usually fine. However, it's best to avoid leaving it plugged in for hours on end.