A Chinese consumer group has joined the growing list of private citizens and government entities demanding information about why and how Apple decided to slow down older iPhones without informing users, Reuters reports. Chinese state news agency Xinhua said the Shanghai Consumer Council has demanded a reply from Apple by Friday about how the company plans to rectify consumer complaints that their old iPhones became sluggish after the iOS 10.2.1 update. Apple has already lowered the price of battery replacements for users with certain iPhones and promised software changes to let users monitor the health of their batteries, but the company is still facing multiple class-action lawsuits and demands from lawmakers to provide more information about the situation.