First of all, many modern smartphone batteries do not tolerate discharges well. Therefore, it is recommended to charge the phone when it has 20-30% charge remaining.
It is also better to avoid charging your smartphone in public places. After that the device breaks down. Additionally, known USB ports may contain malware that can hack your device and steal your data. It is better to buy a portable battery and take it with you.
You can’t charge an overheated smartphone or a device you just brought in from the cold. In this case, allow the phone to adapt to room temperature (wait 20-30 minutes). Also, never place your phone near any heat source. If the device gets too hot, unplug it and wait for it to cool down.
Also, there is no point in keeping your smartphone charged for a long time if it is already charged. This causes the battery to wear out.
If you use your device while charging, this may cause the battery and processor to overheat. It is better to give your smartphone a “rest” at this time.
Source: Ferra

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