Send the following on WhatsApp
Continue to ChatiOS 15 Battery Saving Tips You NEED TO KNOW! https://tips.applenws.com/ios-15-battery-saving-tips-you-need-to-know/2021/idevicehelp
iOS 15 Battery Saving Tips You NEED TO KNOW! https://tips.applenws.com/ios-15-battery-saving-tips-you-need-to-know/2021/idevicehelp