A smartphone can fail for a variety of reasons. But most often it breaks down due to the irrational use of the battery. Its charge should be maintained in the range from 30 to 70%. The battery should never be completely discharged. If it is lithium polymer, it should not be left to charge overnight. This is bad for this type of battery.
Installing multiple applications also shortens the life of the device. Programs are a source of constant background processes that can significantly slow down the operation of the device, especially if it is low-power. To get rid of unnecessary applications and the trash left after them, you should use one of the free cleaning programs available on Google Play.
And you need to turn off your smartphone at least once a week. Round-the-clock work month after month does not benefit the device. Turn on Wi-Fi and Bluetooth only as needed. In no case should they work continuously. And finally, you need to keep your smartphone clean and not use it in extreme cold or heat.
