Now this is helpful: The iPhone 15's new charger can do a 'handshake' with other iPhone 15s and help charge whichever smartphone is low on battery

• The iPhone 15 features a USB-C port instead of the Lightning port which has been standard for more than decade.
• YouTuber Marques Brownlee says the new port lets the iPhone 15 transfer battery power to older iPhones.
• iPhone 15 devices can also communicate with each other to figure out which has a lower battery level, he said. 

If you've ever found yourself in a situation where your phone is about to die, but you can't access an outlet to charge it, the iPhone 15 may have a fix.