Most people have noticed that their phone batteries no longer sustain its energy after it has been fully charged. Sometimes the fault is from you but you wouldn't know. Here are the things you do that kills your battery which you are not aware of.



Display- if you don't know that high contrast display weakens battery, know it now. There are some environments where full brightness is required, it is necessary when there is strong light like when the sun is shining. Dimming the display will save energy and also boost the life span of your battery.

Wi-Fi- most people likes putting this on even when the wifi is not in use. The proper way to use this feature is to put it on when you're sure that there is a ready and workable wifi System to be connected to. When turned on, it searches for network and the searching consumes a lot of energy.

Bluetooth- nothing much would be said about this. After transfer of Data, ensure that the Bluetooth is turned off because this drains the energy slowly.

GPS- GPS is also a heavy consumer of battery even though it’s really only essential for a few apps such as navigation or running ones. In the case of most other apps it’s used only to track user behaviour and can generally be deactivated without disadvantages. To be on a safer side, go-to the phone’s settings and look under battery – that will show the energy consumption of each app. If the app’s energy use is excessive it can be disabled or uninstalled. Under data-usage settings, you can also restrict which apps you allow mobile data rights to – this will help spare the battery as well as reduce data consumption.

Charging- know this, batteries are of types. You are are expected to charge nickel-metal hydride batteries (NiMH) when it's flat dead i.e. when it has fully discharged and when charging, charge it fully because of the memory effect.
Other types like the ones seen in smartphones, it’s advisable to charge these batteries before they run down completely and to remove them from the charger before they hit 100%. It should be kept within the range of 30% to 70%. Charging batteries overnight is not advisable.
Info source;http://www.premiumstech.com/2017/01/secrets-to-long-lasting-cell-phone.html?m=1