One thing that many of us do after using our phone is closing recent apps . A normal mind think that closing recent apps improve performance and also enhances battery life. However it is true to some extent in terms of battery life. But according to me it actually does opposite as we expected in terms of performance. Guys, when we open a app after closing it from background, then it does all the process again, which increases chance of lagging and also takes some amount of battery. And in standby the battery usage is not much affected as you think . It means closing background apps is not good than not closing them.
