Closing background applications to ensure a longer life of the battery on iOS devices? According to Craig Federighi, Apple’s SVP, the answer is NO!
Responding to an email from a customer, Craig Federighi said clearly that frequently close all applications in the background, through the app switcher, it is virtually useless.
When asked, initially turned to Tim Cook, ” Closes frequent applications on iOS multitasking [?], And this is useful for practical battery life? “, Craig Federighi simply replied ” No and no .”
Close background applications is not necessary because iOS is responsible for system resource management so that background tasks do not waste resources (ie the battery).