AppleInsider spotted nine listings in later this year relating to batteries . These include one for an iOS battery life software engineer and another for iOS software power systems engineer . Apple significantly improved the battery life on its iPhone 6 and 6 Plus . But it has been criticised for phones and tablets that only do n't last a day .
AppleInsider spotted nine listings in the past month relating to batteries . These include one for an iOS battery life software engineer and another for iOS software power systems engineer . Apple significantly improved the battery life on its iPhone 6 and 6 Plus . But it has been criticised for phones and tablets that only do n't last a day .