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 . The job listing is from a company called iBattery.com, which describes itself as “a leading provider of mobile applications that help you optimize your iPhone’s performance by optimizing its battery.” 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 .