Why smartphone batteries gradually decrease even when not in use

This can be a cause for concern, especially when users notice that their smartphone battery is draining even when the screen is off. So what is the cause of this phenomenon?

Many reasons why smartphone batteries drain even when not in use

First, it is important to distinguish between two states: the phone is completely off and the phone is in sleep mode. Many people mistakenly believe that when the screen is off, the phone will not consume battery. However, the reality is that the device still needs energy for certain activities.

Factors that drain battery on smartphones

• Apps and system in sleep mode: When your phone is in sleep mode, apps can still run in the background and the system can still wait for calls. Although battery consumption is lower when the screen is off, the device still needs power for these tasks.
• Active connections: Connections like GPS, Wi-Fi, and Bluetooth may remain active to help locate your phone or connect to other devices. This also consumes some power.
• Damaged battery: Over time, smartphone batteries lose their ability to hold energy, leading to battery drain even when not in use.
• Extreme temperatures: Both high and low temperatures can have a negative impact on your battery. In particular, if your phone is left in the sun, the battery will degrade faster than if it is in a cool place.
• Malicious apps: Some apps can contain malware that continuously sends data or records video through the camera even when the screen is off. This also drains battery.

To maximize battery life, the most effective way is to turn off the phone completely. In some cases, after years of use, the battery can still retain a good capacity. If you can't turn off the phone, you can try turning on airplane mode or turning off unnecessary connections to extend battery life. However, it should be noted that the battery will continue to drain even when the screen is off.

Source: https://thanhnien.vn/ly-do-pin-smartphone-giam-dan-du-khong-su-dung-185250119073224284.htm