Why does my Samsung Galaxy show "Unplug charger" during charging?

Learn why your Samsung Galaxy displays "Unplug charger" during charging, how to safely resolve overheating issues, and tips to prevent future occurrences.

If your Samsung Galaxy shows a message prompting you to "Unplug charger," it's typically due to the device or charger overheating. This safety feature prevents damage to your phone by limiting charging speed or temporarily stopping the process until temperatures return to safe levels.

1. Why does the "Unplug charger" message appear?

The "Unplug charger" warning is a built-in safety mechanism designed to protect your Samsung Galaxy from potential damage caused by excessive heat. Here are the most common reasons this message appears:

- High ambient temperature: Charging in hot environments, such as under direct sunlight or in a car, can cause overheating.

- Device usage during charging: Heavy tasks like gaming, video streaming, or downloading large files generate heat, which can trigger the warning.

- Faulty or incompatible charger: Using non-Samsung-certified chargers or cables may lead to inefficient power delivery and overheating.

- Battery degradation: Older batteries may struggle to dissipate heat effectively, especially during fast charging.

2. What should I do when the message appears?

1. Unplug the charger immediately and remove the device from any heat source.
2. Allow the device to cool down for at least 15–30 minutes in a well-ventilated area.
3. Check for any visible signs of damage, such as swelling or discoloration of the battery.
4. Restart the device and reconnect the charger once it has cooled down.

3. How can I prevent the "Unplug charger" message?

To minimize the risk of overheating and avoid the "Unplug charger" warning, follow these best practices:

1. Avoid charging in extreme temperatures (below 0°C or above 35°C).
2. Use only Samsung-certified chargers and cables for optimal safety and performance.
3. Reduce device usage during charging by closing background apps and avoiding heavy tasks.
4. Remove thick phone cases while charging to improve heat dissipation.
5. Enable Adaptive Charging in Settings > Battery > Charging preferences to optimize charging times and reduce heat buildup.

4. Supported Samsung Galaxy devices

This guidance applies to most Samsung Galaxy devices, including the Galaxy S24, Galaxy S25, Galaxy Z Fold, Galaxy Z Flip, and Galaxy A series.

5. When should I seek professional help?

If the "Unplug charger" message persists despite following the recommended steps, or if you notice unusual symptoms like rapid battery drain, device shutdowns, or physical damage, contact an Authorized Samsung Service Center for further assistance.

Related Samsung support topics

• How to optimize your smartphone's performance and avoid heating

• How to identify and replace a damaged Samsung Galaxy battery

• How to troubleshoot Samsung Galaxy charging issues