How often do we complain our phone won't survive until evening? As a matter of fact, it is completely our fault.
According to scientists, a battery has its own level of 'stress'. Just like people, li-ions react to constant stress by reducing lifetime. So if you want your phone to live long, you need to reconsider your 'charging' views.
When your smartphone is fully charged, unplug it
It's bad to keep your phone plugged when it's fully charged, we usually do that at night. When the phone gets 100%, and... it keeps getting impulses. So your battery is in stress.
It's better not to charge it to 100%
Your battery does not need to reach 100% when charging, in fact, it's not desirable. Because at the end your phone charges under high voltage, that harms your battery.
Charge your phone whenever you want
Your battery will last longer if you charge your phone a little few times a day.
It's best when you charge your phone when it loses 10%, however, you can not control this all day long, it's not possible, but just plug it whenever required.
Charging like this will make your battery last longer, and you'll have a fully charged phone whenever you need.
Keep your phone cool
Heat influence your phone battery. If your phone appeared to be under straight sun rays, you should cover it to protect your phone's battery.