You could also turn off your phone and charge it for the best result!
A typical iPhone battery will last approximately 2 years before seeing the charge not last a full day. For best results charge the battery when your battery is under 25% and don't leave it plugged in constantly. A battery only has a limited number of charges during it's life cycle.
At some point it may be necessary to replace the battery in your iPhone or iPad. At iPhone Repair Lakeland we can have you into a new battery in under 15 minutes! No appointment needed just come by our store for service!