This week's tip could be a lifesaver, literally. Both Android and iPhone users can save emergency contacts and their medical information on their phones. On iPhones, use the Health app to add details like blood group and allergies. For Android, go to Settings > Safety & Emergency > Emergency Sharing. Here, you can add medical info and emergency contacts. Set this information to be visible even when your phone is locked. In an emergency, first responders can access this crucial information without unlocking your phone, potentially saving your life.